browser.cc revision 116680a4aac90f2aa7413d9095a592090648e557 
1// Copyright 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/browser.h"
6
7#if defined(OS_WIN)
8#include <windows.h>
9#include <shellapi.h>
10#endif  // defined(OS_WIN)
11
12#include <algorithm>
13#include <string>
14
15#include "base/base_paths.h"
16#include "base/bind.h"
17#include "base/command_line.h"
18#include "base/logging.h"
19#include "base/metrics/histogram.h"
20#include "base/path_service.h"
21#include "base/prefs/pref_service.h"
22#include "base/process/process_info.h"
23#include "base/strings/string_number_conversions.h"
24#include "base/strings/string_util.h"
25#include "base/strings/stringprintf.h"
26#include "base/strings/utf_string_conversions.h"
27#include "base/threading/thread.h"
28#include "base/threading/thread_restrictions.h"
29#include "base/time/time.h"
30#include "chrome/app/chrome_command_ids.h"
31#include "chrome/browser/app_mode/app_mode_utils.h"
32#include "chrome/browser/autofill/personal_data_manager_factory.h"
33#include "chrome/browser/background/background_contents_service.h"
34#include "chrome/browser/background/background_contents_service_factory.h"
35#include "chrome/browser/browser_process.h"
36#include "chrome/browser/browser_shutdown.h"
37#include "chrome/browser/character_encoding.h"
38#include "chrome/browser/chrome_notification_types.h"
39#include "chrome/browser/chrome_page_zoom.h"
40#include "chrome/browser/content_settings/host_content_settings_map.h"
41#include "chrome/browser/content_settings/tab_specific_content_settings.h"
42#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
43#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
44#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
45#include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
46#include "chrome/browser/defaults.h"
47#include "chrome/browser/devtools/devtools_toggle_action.h"
48#include "chrome/browser/devtools/devtools_window.h"
49#include "chrome/browser/download/download_item_model.h"
50#include "chrome/browser/download/download_service.h"
51#include "chrome/browser/download/download_service_factory.h"
52#include "chrome/browser/download/download_shelf.h"
53#include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
54#include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
55#include "chrome/browser/extensions/browser_extension_window_controller.h"
56#include "chrome/browser/extensions/extension_service.h"
57#include "chrome/browser/extensions/tab_helper.h"
58#include "chrome/browser/favicon/favicon_tab_helper.h"
59#include "chrome/browser/file_select_helper.h"
60#include "chrome/browser/first_run/first_run.h"
61#include "chrome/browser/history/top_sites.h"
62#include "chrome/browser/infobars/infobar_service.h"
63#include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
64#include "chrome/browser/lifetime/application_lifetime.h"
65#include "chrome/browser/notifications/notification_ui_manager.h"
66#include "chrome/browser/pepper_broker_infobar_delegate.h"
67#include "chrome/browser/prefs/incognito_mode_prefs.h"
68#include "chrome/browser/profiles/profile.h"
69#include "chrome/browser/profiles/profile_destroyer.h"
70#include "chrome/browser/profiles/profile_metrics.h"
71#include "chrome/browser/repost_form_warning_controller.h"
72#include "chrome/browser/search/search.h"
73#include "chrome/browser/sessions/session_service.h"
74#include "chrome/browser/sessions/session_service_factory.h"
75#include "chrome/browser/sessions/session_tab_helper.h"
76#include "chrome/browser/sessions/session_types.h"
77#include "chrome/browser/sessions/tab_restore_service.h"
78#include "chrome/browser/sessions/tab_restore_service_factory.h"
79#include "chrome/browser/sync/profile_sync_service.h"
80#include "chrome/browser/sync/profile_sync_service_factory.h"
81#include "chrome/browser/sync/sync_ui_util.h"
82#include "chrome/browser/tab_contents/background_contents.h"
83#include "chrome/browser/tab_contents/retargeting_details.h"
84#include "chrome/browser/tab_contents/tab_util.h"
85#include "chrome/browser/themes/theme_service.h"
86#include "chrome/browser/themes/theme_service_factory.h"
87#include "chrome/browser/translate/chrome_translate_client.h"
88#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
89#include "chrome/browser/ui/autofill/chrome_autofill_client.h"
90#include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
91#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
92#include "chrome/browser/ui/bookmarks/bookmark_utils.h"
93#include "chrome/browser/ui/browser_command_controller.h"
94#include "chrome/browser/ui/browser_commands.h"
95#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
96#include "chrome/browser/ui/browser_content_translate_driver_observer.h"
97#include "chrome/browser/ui/browser_dialogs.h"
98#include "chrome/browser/ui/browser_finder.h"
99#include "chrome/browser/ui/browser_instant_controller.h"
100#include "chrome/browser/ui/browser_iterator.h"
101#include "chrome/browser/ui/browser_list.h"
102#include "chrome/browser/ui/browser_navigator.h"
103#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
104#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
105#include "chrome/browser/ui/browser_tabstrip.h"
106#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
107#include "chrome/browser/ui/browser_ui_prefs.h"
108#include "chrome/browser/ui/browser_window.h"
109#include "chrome/browser/ui/chrome_pages.h"
110#include "chrome/browser/ui/chrome_select_file_policy.h"
111#include "chrome/browser/ui/fast_unload_controller.h"
112#include "chrome/browser/ui/find_bar/find_bar.h"
113#include "chrome/browser/ui/find_bar/find_bar_controller.h"
114#include "chrome/browser/ui/find_bar/find_tab_helper.h"
115#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
116#include "chrome/browser/ui/global_error/global_error.h"
117#include "chrome/browser/ui/global_error/global_error_service.h"
118#include "chrome/browser/ui/global_error/global_error_service_factory.h"
119#include "chrome/browser/ui/location_bar/location_bar.h"
120#include "chrome/browser/ui/media_utils.h"
121#include "chrome/browser/ui/search/search_delegate.h"
122#include "chrome/browser/ui/search/search_model.h"
123#include "chrome/browser/ui/search/search_tab_helper.h"
124#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
125#include "chrome/browser/ui/singleton_tabs.h"
126#include "chrome/browser/ui/status_bubble.h"
127#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
128#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
129#include "chrome/browser/ui/tab_helpers.h"
130#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
131#include "chrome/browser/ui/tabs/tab_menu_model.h"
132#include "chrome/browser/ui/tabs/tab_strip_model.h"
133#include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
134#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
135#include "chrome/browser/ui/unload_controller.h"
136#include "chrome/browser/ui/validation_message_bubble.h"
137#include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
138#include "chrome/browser/ui/webui/signin/login_ui_service.h"
139#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
140#include "chrome/browser/ui/window_sizer/window_sizer.h"
141#include "chrome/browser/ui/zoom/zoom_controller.h"
142#include "chrome/browser/upgrade_detector.h"
143#include "chrome/browser/web_applications/web_app.h"
144#include "chrome/common/chrome_constants.h"
145#include "chrome/common/chrome_switches.h"
146#include "chrome/common/custom_handlers/protocol_handler.h"
147#include "chrome/common/pref_names.h"
148#include "chrome/common/profiling.h"
149#include "chrome/common/search_types.h"
150#include "chrome/common/url_constants.h"
151#include "components/bookmarks/browser/bookmark_model.h"
152#include "components/bookmarks/browser/bookmark_utils.h"
153#include "components/google/core/browser/google_url_tracker.h"
154#include "components/startup_metric_utils/startup_metric_utils.h"
155#include "components/web_modal/popup_manager.h"
156#include "components/web_modal/web_contents_modal_dialog_manager.h"
157#include "content/public/browser/devtools_manager.h"
158#include "content/public/browser/download_item.h"
159#include "content/public/browser/download_manager.h"
160#include "content/public/browser/interstitial_page.h"
161#include "content/public/browser/invalidate_type.h"
162#include "content/public/browser/navigation_controller.h"
163#include "content/public/browser/navigation_entry.h"
164#include "content/public/browser/notification_details.h"
165#include "content/public/browser/notification_service.h"
166#include "content/public/browser/plugin_service.h"
167#include "content/public/browser/render_process_host.h"
168#include "content/public/browser/render_view_host.h"
169#include "content/public/browser/render_widget_host_view.h"
170#include "content/public/browser/site_instance.h"
171#include "content/public/browser/user_metrics.h"
172#include "content/public/browser/web_contents.h"
173#include "content/public/common/content_switches.h"
174#include "content/public/common/page_zoom.h"
175#include "content/public/common/renderer_preferences.h"
176#include "content/public/common/webplugininfo.h"
177#include "extensions/browser/extension_prefs.h"
178#include "extensions/browser/extension_system.h"
179#include "extensions/common/constants.h"
180#include "extensions/common/extension.h"
181#include "extensions/common/manifest_handlers/background_info.h"
182#include "grit/chromium_strings.h"
183#include "grit/generated_resources.h"
184#include "grit/locale_settings.h"
185#include "grit/theme_resources.h"
186#include "net/base/filename_util.h"
187#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
188#include "net/cookies/cookie_monster.h"
189#include "net/url_request/url_request_context.h"
190#include "third_party/WebKit/public/web/WebWindowFeatures.h"
191#include "ui/base/l10n/l10n_util.h"
192#include "ui/base/window_open_disposition.h"
193#include "ui/gfx/point.h"
194#include "ui/shell_dialogs/selected_file_info.h"
195
196#if defined(OS_WIN)
197#include "base/win/metro.h"
198#include "chrome/browser/ssl/ssl_error_info.h"
199#include "chrome/browser/task_manager/task_manager.h"
200#include "chrome/browser/ui/view_ids.h"
201#include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
202#include "ui/base/win/shell.h"
203#endif  // OS_WIN
204
205#if defined(OS_CHROMEOS)
206#include "chrome/browser/chromeos/drive/file_system_util.h"
207#endif
208
209#if defined(USE_ASH)
210#include "ash/ash_switches.h"
211#endif
212
213using base::TimeDelta;
214using base::UserMetricsAction;
215using content::NativeWebKeyboardEvent;
216using content::NavigationController;
217using content::NavigationEntry;
218using content::OpenURLParams;
219using content::PluginService;
220using content::Referrer;
221using content::RenderWidgetHostView;
222using content::SiteInstance;
223using content::WebContents;
224using extensions::Extension;
225using ui::WebDialogDelegate;
226using web_modal::WebContentsModalDialogManager;
227using blink::WebWindowFeatures;
228
229///////////////////////////////////////////////////////////////////////////////
230
231namespace {
232
233// How long we wait before updating the browser chrome while loading a page.
234const int kUIUpdateCoalescingTimeMS = 200;
235
236BrowserWindow* CreateBrowserWindow(Browser* browser) {
237  return BrowserWindow::CreateBrowserWindow(browser);
238}
239
240// Is the fast tab unload experiment enabled?
241bool IsFastTabUnloadEnabled() {
242  return CommandLine::ForCurrentProcess()->HasSwitch(
243        switches::kEnableFastUnload);
244}
245
246}  // namespace
247
248////////////////////////////////////////////////////////////////////////////////
249// Browser, CreateParams:
250
251Browser::CreateParams::CreateParams(Profile* profile,
252                                    chrome::HostDesktopType host_desktop_type)
253    : type(TYPE_TABBED),
254      profile(profile),
255      host_desktop_type(host_desktop_type),
256      trusted_source(false),
257      initial_show_state(ui::SHOW_STATE_DEFAULT),
258      is_session_restore(false),
259      window(NULL) {
260}
261
262Browser::CreateParams::CreateParams(Type type,
263                                    Profile* profile,
264                                    chrome::HostDesktopType host_desktop_type)
265    : type(type),
266      profile(profile),
267      host_desktop_type(host_desktop_type),
268      trusted_source(false),
269      initial_show_state(ui::SHOW_STATE_DEFAULT),
270      is_session_restore(false),
271      window(NULL) {
272}
273
274// static
275Browser::CreateParams Browser::CreateParams::CreateForApp(
276    const std::string& app_name,
277    bool trusted_source,
278    const gfx::Rect& window_bounds,
279    Profile* profile,
280    chrome::HostDesktopType host_desktop_type) {
281  DCHECK(!app_name.empty());
282
283  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
284  params.app_name = app_name;
285  params.trusted_source = trusted_source;
286  params.initial_bounds = window_bounds;
287
288  return params;
289}
290
291// static
292Browser::CreateParams Browser::CreateParams::CreateForDevTools(
293    Profile* profile,
294    chrome::HostDesktopType host_desktop_type) {
295  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
296  params.app_name = DevToolsWindow::kDevToolsApp;
297  params.trusted_source = true;
298  return params;
299}
300
301////////////////////////////////////////////////////////////////////////////////
302// Browser, InterstitialObserver:
303
304class Browser::InterstitialObserver : public content::WebContentsObserver {
305 public:
306  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
307      : WebContentsObserver(web_contents),
308        browser_(browser) {
309  }
310
311  using content::WebContentsObserver::web_contents;
312
313  virtual void DidAttachInterstitialPage() OVERRIDE {
314    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
315  }
316
317  virtual void DidDetachInterstitialPage() OVERRIDE {
318    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
319  }
320
321 private:
322  Browser* browser_;
323
324  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
325};
326
327///////////////////////////////////////////////////////////////////////////////
328// Browser, Constructors, Creation, Showing:
329
330Browser::Browser(const CreateParams& params)
331    : type_(params.type),
332      profile_(params.profile),
333      window_(NULL),
334      tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
335      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
336                                         params.profile)),
337      app_name_(params.app_name),
338      is_trusted_source_(params.trusted_source),
339      cancel_download_confirmation_state_(NOT_PROMPTED),
340      override_bounds_(params.initial_bounds),
341      initial_show_state_(params.initial_show_state),
342      is_session_restore_(params.is_session_restore),
343      host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
344          params.host_desktop_type)),
345      content_setting_bubble_model_delegate_(
346          new BrowserContentSettingBubbleModelDelegate(this)),
347      toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
348      tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
349      synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
350      bookmark_bar_state_(BookmarkBar::HIDDEN),
351      command_controller_(new chrome::BrowserCommandController(this)),
352      window_has_shown_(false),
353      chrome_updater_factory_(this),
354      weak_factory_(this),
355      translate_driver_observer_(
356          new BrowserContentTranslateDriverObserver(this)) {
357  // If this causes a crash then a window is being opened using a profile type
358  // that is disallowed by policy. The crash prevents the disabled window type
359  // from opening at all, but the path that triggered it should be fixed.
360  CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
361  CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
362      << "Only off the record browser may be opened in guest mode";
363
364  // TODO(jeremy): Move to initializer list once flag is removed.
365  if (IsFastTabUnloadEnabled())
366    fast_unload_controller_.reset(new chrome::FastUnloadController(this));
367  else
368    unload_controller_.reset(new chrome::UnloadController(this));
369
370  if (!app_name_.empty())
371    chrome::RegisterAppPrefs(app_name_, profile_);
372  tab_strip_model_->AddObserver(this);
373
374  toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
375  search_model_.reset(new SearchModel());
376  search_delegate_.reset(new SearchDelegate(search_model_.get()));
377
378  registrar_.Add(this,
379                 chrome::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
380                 content::Source<Profile>(profile_->GetOriginalProfile()));
381  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
382                 content::Source<Profile>(profile_->GetOriginalProfile()));
383  registrar_.Add(this,
384                 chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
385                 content::Source<Profile>(profile_->GetOriginalProfile()));
386  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
387                 content::NotificationService::AllSources());
388#if defined(ENABLE_THEMES)
389  registrar_.Add(
390      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
391      content::Source<ThemeService>(
392          ThemeServiceFactory::GetForProfile(profile_)));
393#endif
394  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
395                 content::NotificationService::AllSources());
396
397  profile_pref_registrar_.Init(profile_->GetPrefs());
398  profile_pref_registrar_.Add(
399      prefs::kDevToolsDisabled,
400      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
401  profile_pref_registrar_.Add(
402      prefs::kShowBookmarkBar,
403      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
404                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
405
406  BrowserList::AddBrowser(this);
407
408  // NOTE: These prefs all need to be explicitly destroyed in the destructor
409  // or you'll get a nasty surprise when you run the incognito tests.
410  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
411                             profile_->GetPrefs());
412
413  if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
414    instant_controller_.reset(new BrowserInstantController(this));
415
416  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
417
418  ProfileMetrics::LogProfileLaunch(profile_);
419
420  window_ = params.window ? params.window : CreateBrowserWindow(this);
421
422  // Create the extension window controller before sending notifications.
423  extension_window_controller_.reset(
424      new BrowserExtensionWindowController(this));
425
426  SessionService* session_service =
427      SessionServiceFactory::GetForProfileForSessionRestore(profile_);
428  if (session_service)
429    session_service->WindowOpened(this);
430
431  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
432  //             replace uses of this with BL's notifications.
433  content::NotificationService::current()->Notify(
434      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
435      content::Source<Browser>(this),
436      content::NotificationService::NoDetails());
437
438  // TODO(beng): move to ChromeBrowserMain:
439  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
440#if defined(OS_WIN)
441    // Notify PDM that this is a first run.
442    ImportAutofillDataWin(
443        autofill::PersonalDataManagerFactory::GetForProfile(profile_));
444#endif  // defined(OS_WIN)
445  }
446
447  fullscreen_controller_.reset(new FullscreenController(this));
448
449  // Must be initialized after window_.
450  // Also: surprise! a modal dialog host is not necessary to host modal dialogs
451  // without a modal dialog host, so that value may be null.
452  popup_manager_.reset(new web_modal::PopupManager(
453      GetWebContentsModalDialogHost()));
454}
455
456Browser::~Browser() {
457  // Stop observing notifications before continuing with destruction. Profile
458  // destruction will unload extensions and reentrant calls to Browser:: should
459  // be avoided while it is being torn down.
460  registrar_.RemoveAll();
461
462  // The tab strip should not have any tabs at this point.
463  DCHECK(tab_strip_model_->empty());
464  tab_strip_model_->RemoveObserver(this);
465
466  // Destroy the BrowserCommandController before removing the browser, so that
467  // it doesn't act on any notifications that are sent as a result of removing
468  // the browser.
469  command_controller_.reset();
470  BrowserList::RemoveBrowser(this);
471
472  SessionService* session_service =
473      SessionServiceFactory::GetForProfile(profile_);
474  if (session_service)
475    session_service->WindowClosed(session_id_);
476
477  TabRestoreService* tab_restore_service =
478      TabRestoreServiceFactory::GetForProfile(profile());
479  if (tab_restore_service)
480    tab_restore_service->BrowserClosed(tab_restore_service_delegate());
481
482#if !defined(OS_MACOSX)
483  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
484    // We're the last browser window with this profile. We need to nuke the
485    // TabRestoreService, which will start the shutdown of the
486    // NavigationControllers and allow for proper shutdown. If we don't do this
487    // chrome won't shutdown cleanly, and may end up crashing when some
488    // thread tries to use the IO thread (or another thread) that is no longer
489    // valid.
490    // This isn't a valid assumption for Mac OS, as it stays running after
491    // the last browser has closed. The Mac equivalent is in its app
492    // controller.
493    TabRestoreServiceFactory::ResetForProfile(profile_);
494  }
495#endif
496
497  profile_pref_registrar_.RemoveAll();
498
499  encoding_auto_detect_.Destroy();
500
501  // Destroy BrowserExtensionWindowController before the incognito profile
502  // is destroyed to make sure the chrome.windows.onRemoved event is sent.
503  extension_window_controller_.reset();
504
505  // Destroy BrowserInstantController before the incongnito profile is destroyed
506  // because the InstantController destructor depends on this profile.
507  instant_controller_.reset();
508
509  if (profile_->IsOffTheRecord() &&
510      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
511    // An incognito profile is no longer needed, this indirectly frees
512    // its cache and cookies once it gets destroyed at the appropriate time.
513    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
514  }
515
516  // There may be pending file dialogs, we need to tell them that we've gone
517  // away so they don't try and call back to us.
518  if (select_file_dialog_.get())
519    select_file_dialog_->ListenerDestroyed();
520
521  int num_downloads;
522  if (OkToCloseWithInProgressDownloads(&num_downloads) ==
523          DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
524      !browser_defaults::kBrowserAliveWithNoWindows) {
525    DownloadService::CancelAllDownloads();
526  }
527}
528
529///////////////////////////////////////////////////////////////////////////////
530// Getters & Setters
531
532FindBarController* Browser::GetFindBarController() {
533  if (!find_bar_controller_.get()) {
534    FindBar* find_bar = window_->CreateFindBar();
535    find_bar_controller_.reset(new FindBarController(find_bar));
536    find_bar->SetFindBarController(find_bar_controller_.get());
537    find_bar_controller_->ChangeWebContents(
538        tab_strip_model_->GetActiveWebContents());
539    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
540  }
541  return find_bar_controller_.get();
542}
543
544bool Browser::HasFindBarController() const {
545  return find_bar_controller_.get() != NULL;
546}
547
548bool Browser::is_app() const {
549  return !app_name_.empty();
550}
551
552bool Browser::is_devtools() const {
553  return app_name_ == DevToolsWindow::kDevToolsApp;
554}
555
556///////////////////////////////////////////////////////////////////////////////
557// Browser, State Storage and Retrieval for UI:
558
559gfx::Image Browser::GetCurrentPageIcon() const {
560  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
561  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
562  // window during the window's creation (before tabs have been added).
563  FaviconTabHelper* favicon_tab_helper =
564      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
565  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
566}
567
568base::string16 Browser::GetWindowTitleForCurrentTab() const {
569  WebContents* contents = tab_strip_model_->GetActiveWebContents();
570  base::string16 title;
571
572  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
573  // window during the window's creation (before tabs have been added).
574  if (contents) {
575    title = contents->GetTitle();
576    FormatTitleForDisplay(&title);
577  }
578  if (title.empty())
579    title = CoreTabHelper::GetDefaultTitle();
580
581#if defined(OS_MACOSX)
582  // On Mac, we don't want to suffix the page title with
583  // the application name.
584  return title;
585#elif defined(USE_ASH)
586  // On Ash, we don't want to suffix the page title with the application name,
587  // but on Windows, where USE_ASH can also be true, we still want the prefix
588  // on desktop.
589  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
590    return title;
591#endif
592  // Don't append the app name to window titles on app frames and app popups
593  return is_app() ?
594      title :
595      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
596}
597
598// static
599void Browser::FormatTitleForDisplay(base::string16* title) {
600  size_t current_index = 0;
601  size_t match_index;
602  while ((match_index = title->find(L'\n', current_index)) !=
603         base::string16::npos) {
604    title->replace(match_index, 1, base::string16());
605    current_index = match_index;
606  }
607}
608
609///////////////////////////////////////////////////////////////////////////////
610// Browser, OnBeforeUnload handling:
611
612bool Browser::ShouldCloseWindow() {
613  if (!CanCloseWithInProgressDownloads())
614    return false;
615
616  if (IsFastTabUnloadEnabled())
617    return fast_unload_controller_->ShouldCloseWindow();
618  return unload_controller_->ShouldCloseWindow();
619}
620
621bool Browser::CallBeforeUnloadHandlers(
622    const base::Callback<void(bool)>& on_close_confirmed) {
623  cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
624  if (IsFastTabUnloadEnabled()) {
625    return fast_unload_controller_->CallBeforeUnloadHandlers(
626        on_close_confirmed);
627  }
628  return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
629}
630
631void Browser::ResetBeforeUnloadHandlers() {
632  cancel_download_confirmation_state_ = NOT_PROMPTED;
633  if (IsFastTabUnloadEnabled())
634    fast_unload_controller_->ResetBeforeUnloadHandlers();
635  else
636    unload_controller_->ResetBeforeUnloadHandlers();
637}
638
639bool Browser::HasCompletedUnloadProcessing() const {
640  DCHECK(IsFastTabUnloadEnabled());
641  return fast_unload_controller_->HasCompletedUnloadProcessing();
642}
643
644bool Browser::IsAttemptingToCloseBrowser() const {
645  if (IsFastTabUnloadEnabled())
646    return fast_unload_controller_->is_attempting_to_close_browser();
647  return unload_controller_->is_attempting_to_close_browser();
648}
649
650void Browser::OnWindowClosing() {
651  if (!ShouldCloseWindow())
652    return;
653
654  // Application should shutdown on last window close if the user is explicitly
655  // trying to quit, or if there is nothing keeping the browser alive (such as
656  // AppController on the Mac, or BackgroundContentsService for background
657  // pages).
658  bool should_quit_if_last_browser =
659      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
660
661  if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
662    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
663
664  // Don't use GetForProfileIfExisting here, we want to force creation of the
665  // session service so that user can restore what was open.
666  SessionService* session_service =
667      SessionServiceFactory::GetForProfile(profile());
668  if (session_service)
669    session_service->WindowClosing(session_id());
670
671  TabRestoreService* tab_restore_service =
672      TabRestoreServiceFactory::GetForProfile(profile());
673
674#if defined(USE_AURA)
675  if (tab_restore_service && is_app() && !is_devtools())
676    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
677#endif
678
679  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
680    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
681
682  // TODO(sky): convert session/tab restore to use notification.
683  content::NotificationService::current()->Notify(
684      chrome::NOTIFICATION_BROWSER_CLOSING,
685      content::Source<Browser>(this),
686      content::NotificationService::NoDetails());
687
688  if (!IsFastTabUnloadEnabled())
689    tab_strip_model_->CloseAllTabs();
690}
691
692////////////////////////////////////////////////////////////////////////////////
693// In-progress download termination handling:
694
695void Browser::InProgressDownloadResponse(bool cancel_downloads) {
696  if (cancel_downloads) {
697    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
698    chrome::CloseWindow(this);
699    return;
700  }
701
702  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
703  // close again we'll show the warning again.
704  cancel_download_confirmation_state_ = NOT_PROMPTED;
705
706  // Show the download page so the user can figure-out what downloads are still
707  // in-progress.
708  chrome::ShowDownloads(this);
709
710  // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
711  // prompt every time any tab is closed. http://crbug.com/305516
712  if (IsFastTabUnloadEnabled())
713    fast_unload_controller_->CancelWindowClose();
714  else
715    unload_controller_->CancelWindowClose();
716}
717
718Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
719    int* num_downloads_blocking) const {
720  DCHECK(num_downloads_blocking);
721  *num_downloads_blocking = 0;
722
723  // If we're not running a full browser process with a profile manager
724  // (testing), it's ok to close the browser.
725  if (!g_browser_process->profile_manager())
726    return DOWNLOAD_CLOSE_OK;
727
728  int total_download_count =
729      DownloadService::NonMaliciousDownloadCountAllProfiles();
730  if (total_download_count == 0)
731    return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
732
733  // Figure out how many windows are open total, and associated with this
734  // profile, that are relevant for the ok-to-close decision.
735  int profile_window_count = 0;
736  int total_window_count = 0;
737  for (chrome::BrowserIterator it; !it.done(); it.Next()) {
738    // Don't count this browser window or any other in the process of closing.
739    Browser* const browser = *it;
740    // Window closing may be delayed, and windows that are in the process of
741    // closing don't count against our totals.
742    if (browser == this || browser->IsAttemptingToCloseBrowser())
743      continue;
744
745    if (it->profile() == profile())
746      profile_window_count++;
747    total_window_count++;
748  }
749
750  // If there aren't any other windows, we're at browser shutdown,
751  // which would cancel all current downloads.
752  if (total_window_count == 0) {
753    *num_downloads_blocking = total_download_count;
754    return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
755  }
756
757  // If there aren't any other windows on our profile, and we're an incognito
758  // profile, and there are downloads associated with that profile,
759  // those downloads would be cancelled by our window (-> profile) close.
760  DownloadService* download_service =
761      DownloadServiceFactory::GetForBrowserContext(profile());
762  if ((profile_window_count == 0) &&
763      (download_service->NonMaliciousDownloadCount() > 0) &&
764      profile()->IsOffTheRecord()) {
765    *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
766    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
767  }
768
769  // Those are the only conditions under which we will block shutdown.
770  return DOWNLOAD_CLOSE_OK;
771}
772
773////////////////////////////////////////////////////////////////////////////////
774// Browser, Tab adding/showing functions:
775
776void Browser::WindowFullscreenStateChanged() {
777  fullscreen_controller_->WindowFullscreenStateChanged();
778  command_controller_->FullscreenStateChanged();
779  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
780}
781
782///////////////////////////////////////////////////////////////////////////////
783// Browser, Assorted browser commands:
784
785void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
786  fullscreen_controller_->
787      ToggleBrowserFullscreenModeWithExtension(extension_url);
788}
789
790bool Browser::SupportsWindowFeature(WindowFeature feature) const {
791  return SupportsWindowFeatureImpl(feature, true);
792}
793
794bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
795  return SupportsWindowFeatureImpl(feature, false);
796}
797
798void Browser::ToggleEncodingAutoDetect() {
799  content::RecordAction(UserMetricsAction("AutoDetectChange"));
800  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
801  // If "auto detect" is turned on, then any current override encoding
802  // is cleared. This also implicitly performs a reload.
803  // OTOH, if "auto detect" is turned off, we don't change the currently
804  // active encoding.
805  if (encoding_auto_detect_.GetValue()) {
806    WebContents* contents = tab_strip_model_->GetActiveWebContents();
807    if (contents)
808      contents->ResetOverrideEncoding();
809  }
810}
811
812void Browser::OverrideEncoding(int encoding_id) {
813  content::RecordAction(UserMetricsAction("OverrideEncoding"));
814  const std::string selected_encoding =
815      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
816  WebContents* contents = tab_strip_model_->GetActiveWebContents();
817  if (!selected_encoding.empty() && contents)
818     contents->SetOverrideEncoding(selected_encoding);
819  // Update the list of recently selected encodings.
820  std::string new_selected_encoding_list;
821  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
822        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
823        encoding_id,
824        &new_selected_encoding_list)) {
825    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
826                                    new_selected_encoding_list);
827  }
828}
829
830void Browser::OpenFile() {
831  content::RecordAction(UserMetricsAction("OpenFile"));
832  select_file_dialog_ = ui::SelectFileDialog::Create(
833      this, new ChromeSelectFilePolicy(
834          tab_strip_model_->GetActiveWebContents()));
835
836  const base::FilePath directory = profile_->last_selected_directory();
837
838  // TODO(beng): figure out how to juggle this.
839  gfx::NativeWindow parent_window = window_->GetNativeWindow();
840  ui::SelectFileDialog::FileTypeInfo file_types;
841  file_types.support_drive = true;
842  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
843                                  base::string16(),
844                                  directory,
845                                  &file_types,
846                                  0,
847                                  base::FilePath::StringType(),
848                                  parent_window,
849                                  NULL);
850}
851
852void Browser::UpdateDownloadShelfVisibility(bool visible) {
853  if (GetStatusBubble())
854    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
855}
856
857///////////////////////////////////////////////////////////////////////////////
858
859void Browser::UpdateUIForNavigationInTab(WebContents* contents,
860                                         content::PageTransition transition,
861                                         bool user_initiated) {
862  tab_strip_model_->TabNavigating(contents, transition);
863
864  bool contents_is_selected =
865      contents == tab_strip_model_->GetActiveWebContents();
866  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
867    // Forcibly reset the location bar if the url is going to change in the
868    // current tab, since otherwise it won't discard any ongoing user edits,
869    // since it doesn't realize this is a user-initiated action.
870    window()->GetLocationBar()->Revert();
871  }
872
873  if (GetStatusBubble())
874    GetStatusBubble()->Hide();
875
876  // Update the location bar. This is synchronous. We specifically don't
877  // update the load state since the load hasn't started yet and updating it
878  // will put it out of sync with the actual state like whether we're
879  // displaying a favicon, which controls the throbber. If we updated it here,
880  // the throbber will show the default favicon for a split second when
881  // navigating away from the new tab page.
882  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
883
884  if (contents_is_selected)
885    contents->SetInitialFocus();
886}
887
888///////////////////////////////////////////////////////////////////////////////
889// Browser, PageNavigator implementation:
890
891WebContents* Browser::OpenURL(const OpenURLParams& params) {
892  return OpenURLFromTab(NULL, params);
893}
894
895///////////////////////////////////////////////////////////////////////////////
896// Browser, TabStripModelObserver implementation:
897
898void Browser::TabInsertedAt(WebContents* contents,
899                            int index,
900                            bool foreground) {
901  SetAsDelegate(contents, true);
902
903  if (popup_manager_)
904    popup_manager_->RegisterWith(contents);
905
906  SessionTabHelper* session_tab_helper =
907      SessionTabHelper::FromWebContents(contents);
908  session_tab_helper->SetWindowID(session_id());
909
910  content::NotificationService::current()->Notify(
911      chrome::NOTIFICATION_TAB_PARENTED,
912      content::Source<content::WebContents>(contents),
913      content::NotificationService::NoDetails());
914
915  SyncHistoryWithTabs(index);
916
917  // Make sure the loading state is updated correctly, otherwise the throbber
918  // won't start if the page is loading.
919  LoadingStateChanged(contents, true);
920
921  interstitial_observers_.push_back(new InterstitialObserver(this, contents));
922
923  SessionService* session_service =
924      SessionServiceFactory::GetForProfile(profile_);
925  if (session_service) {
926    session_service->TabInserted(contents);
927    int new_active_index = tab_strip_model_->active_index();
928    if (index < new_active_index)
929      session_service->SetSelectedTabInWindow(session_id(),
930                                              new_active_index);
931  }
932}
933
934void Browser::TabClosingAt(TabStripModel* tab_strip_model,
935                           WebContents* contents,
936                           int index) {
937  fullscreen_controller_->OnTabClosing(contents);
938  SessionService* session_service =
939      SessionServiceFactory::GetForProfile(profile_);
940  if (session_service)
941    session_service->TabClosing(contents);
942  content::NotificationService::current()->Notify(
943      chrome::NOTIFICATION_TAB_CLOSING,
944      content::Source<NavigationController>(&contents->GetController()),
945      content::NotificationService::NoDetails());
946
947  if (popup_manager_)
948    popup_manager_->UnregisterWith(contents);
949
950  // Sever the WebContents' connection back to us.
951  SetAsDelegate(contents, false);
952}
953
954void Browser::TabDetachedAt(WebContents* contents, int index) {
955  // TabDetachedAt is called before TabStripModel has updated the
956  // active index.
957  int old_active_index = tab_strip_model_->active_index();
958  if (index < old_active_index && !tab_strip_model_->closing_all()) {
959    SessionService* session_service =
960        SessionServiceFactory::GetForProfileIfExisting(profile_);
961    if (session_service)
962      session_service->SetSelectedTabInWindow(session_id(),
963                                              old_active_index - 1);
964  }
965
966  if (popup_manager_)
967    popup_manager_->UnregisterWith(contents);
968
969  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
970}
971
972void Browser::TabDeactivated(WebContents* contents) {
973  fullscreen_controller_->OnTabDeactivated(contents);
974  search_delegate_->OnTabDeactivated(contents);
975  SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
976
977  // Save what the user's currently typing, so it can be restored when we
978  // switch back to this tab.
979  window_->GetLocationBar()->SaveStateToContents(contents);
980
981  if (instant_controller_)
982    instant_controller_->TabDeactivated(contents);
983}
984
985void Browser::ActiveTabChanged(WebContents* old_contents,
986                               WebContents* new_contents,
987                               int index,
988                               int reason) {
989  content::RecordAction(UserMetricsAction("ActiveTabChanged"));
990
991  // Update the bookmark state, since the BrowserWindow may query it during
992  // OnActiveTabChanged() below.
993  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
994
995  // Let the BrowserWindow do its handling.  On e.g. views this changes the
996  // focused object, which should happen before we update the toolbar below,
997  // since the omnibox expects the correct element to already be focused when it
998  // is updated.
999  window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1000
1001  fullscreen_controller_->OnTabDetachedFromView(old_contents);
1002
1003  // Discarded tabs always get reloaded.
1004  if (tab_strip_model_->IsTabDiscarded(index)) {
1005    LOG(WARNING) << "Reloading discarded tab at " << index;
1006    static int reload_count = 0;
1007    UMA_HISTOGRAM_CUSTOM_COUNTS(
1008        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1009    chrome::Reload(this, CURRENT_TAB);
1010  }
1011
1012  // If we have any update pending, do it now.
1013  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1014    ProcessPendingUIUpdates();
1015
1016  // Propagate the profile to the location bar.
1017  UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1018
1019  if (chrome::IsInstantExtendedAPIEnabled())
1020    search_delegate_->OnTabActivated(new_contents);
1021
1022  // Update reload/stop state.
1023  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1024
1025  // Update commands to reflect current state.
1026  command_controller_->TabStateChanged();
1027
1028  // Reset the status bubble.
1029  StatusBubble* status_bubble = GetStatusBubble();
1030  if (status_bubble) {
1031    status_bubble->Hide();
1032
1033    // Show the loading state (if any).
1034    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1035        tab_strip_model_->GetActiveWebContents())->GetStatusText());
1036  }
1037
1038  if (HasFindBarController()) {
1039    find_bar_controller_->ChangeWebContents(new_contents);
1040    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1041  }
1042
1043  // Update sessions. Don't force creation of sessions. If sessions doesn't
1044  // exist, the change will be picked up by sessions when created.
1045  SessionService* session_service =
1046      SessionServiceFactory::GetForProfileIfExisting(profile_);
1047  if (session_service && !tab_strip_model_->closing_all()) {
1048    session_service->SetSelectedTabInWindow(session_id(),
1049                                            tab_strip_model_->active_index());
1050  }
1051
1052  // This needs to be called after notifying SearchDelegate.
1053  if (instant_controller_)
1054    instant_controller_->ActiveTabChanged();
1055
1056  autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1057  SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1058}
1059
1060void Browser::TabMoved(WebContents* contents,
1061                       int from_index,
1062                       int to_index) {
1063  DCHECK(from_index >= 0 && to_index >= 0);
1064  // Notify the history service.
1065  SyncHistoryWithTabs(std::min(from_index, to_index));
1066}
1067
1068void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1069                            WebContents* old_contents,
1070                            WebContents* new_contents,
1071                            int index) {
1072  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1073  fullscreen_controller_->OnTabClosing(old_contents);
1074  SessionService* session_service =
1075      SessionServiceFactory::GetForProfile(profile_);
1076  if (session_service)
1077    session_service->TabClosing(old_contents);
1078  TabInsertedAt(new_contents,
1079                index,
1080                (index == tab_strip_model_->active_index()));
1081
1082  int entry_count = new_contents->GetController().GetEntryCount();
1083  if (entry_count > 0) {
1084    // Send out notification so that observers are updated appropriately.
1085    new_contents->GetController().NotifyEntryChanged(
1086        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1087        entry_count - 1);
1088  }
1089
1090  if (session_service) {
1091    // The new_contents may end up with a different navigation stack. Force
1092    // the session service to update itself.
1093    session_service->TabRestored(new_contents,
1094                                 tab_strip_model_->IsTabPinned(index));
1095  }
1096}
1097
1098void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1099  SessionService* session_service =
1100      SessionServiceFactory::GetForProfileIfExisting(profile());
1101  if (session_service) {
1102    SessionTabHelper* session_tab_helper =
1103        SessionTabHelper::FromWebContents(contents);
1104    session_service->SetPinnedState(session_id(),
1105                                    session_tab_helper->session_id(),
1106                                    tab_strip_model_->IsTabPinned(index));
1107  }
1108}
1109
1110void Browser::TabStripEmpty() {
1111  // Close the frame after we return to the message loop (not immediately,
1112  // otherwise it will destroy this object before the stack has a chance to
1113  // cleanly unwind.)
1114  // Note: This will be called several times if TabStripEmpty is called several
1115  //       times. This is because it does not close the window if tabs are
1116  //       still present.
1117  base::MessageLoop::current()->PostTask(
1118      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1119
1120  // Instant may have visible WebContents that need to be detached before the
1121  // window system closes.
1122  instant_controller_.reset();
1123}
1124
1125bool Browser::CanOverscrollContent() const {
1126#if defined(USE_AURA)
1127  const std::string value = CommandLine::ForCurrentProcess()->
1128      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
1129  bool overscroll_enabled = value != "0";
1130  if (!overscroll_enabled)
1131    return false;
1132  if (is_app() || is_devtools() || !is_type_tabbed())
1133    return false;
1134
1135  // The detached bookmark bar has appearance of floating above the
1136  // web-contents. This does not play nicely with overscroll navigation
1137  // gestures. So disable overscroll navigation when the bookmark bar is in the
1138  // detached state and the overscroll effect moves the layers.
1139  if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1140    return false;
1141  return true;
1142#else
1143  return false;
1144#endif
1145}
1146
1147bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1148  // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1149  // other pages have committed.
1150  Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1151  if (!profile || !source->GetController().GetLastCommittedEntry())
1152    return false;
1153  GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1154  return chrome::IsNTPURL(committed_url, profile);
1155}
1156
1157bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1158                                     const NativeWebKeyboardEvent& event,
1159                                     bool* is_keyboard_shortcut) {
1160  // Escape exits tabbed fullscreen mode.
1161  // TODO(koz): Write a test for this http://crbug.com/100441.
1162  if (event.windowsKeyCode == 27 &&
1163      fullscreen_controller_->HandleUserPressedEscape()) {
1164    return true;
1165  }
1166  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1167}
1168
1169void Browser::HandleKeyboardEvent(content::WebContents* source,
1170                                  const NativeWebKeyboardEvent& event) {
1171  DevToolsWindow* devtools_window =
1172      DevToolsWindow::GetInstanceForInspectedWebContents(source);
1173  bool handled = false;
1174  if (devtools_window)
1175    handled = devtools_window->ForwardKeyboardEvent(event);
1176
1177  if (!handled)
1178    window()->HandleKeyboardEvent(event);
1179}
1180
1181bool Browser::TabsNeedBeforeUnloadFired() {
1182  if (IsFastTabUnloadEnabled())
1183    return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1184  return unload_controller_->TabsNeedBeforeUnloadFired();
1185}
1186
1187void Browser::OverscrollUpdate(int delta_y) {
1188  window_->OverscrollUpdate(delta_y);
1189}
1190
1191void Browser::ShowValidationMessage(content::WebContents* web_contents,
1192                                    const gfx::Rect& anchor_in_root_view,
1193                                    const base::string16& main_text,
1194                                    const base::string16& sub_text) {
1195  RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1196  if (rwhv) {
1197    validation_message_bubble_ =
1198        chrome::ValidationMessageBubble::CreateAndShow(
1199            rwhv->GetRenderWidgetHost(),
1200            anchor_in_root_view,
1201            main_text,
1202            sub_text);
1203  }
1204}
1205
1206void Browser::HideValidationMessage(content::WebContents* web_contents) {
1207  validation_message_bubble_.reset();
1208}
1209
1210void Browser::MoveValidationMessage(content::WebContents* web_contents,
1211                                    const gfx::Rect& anchor_in_root_view) {
1212  if (!validation_message_bubble_)
1213    return;
1214  RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1215  if (rwhv) {
1216    validation_message_bubble_->SetPositionRelativeToAnchor(
1217        rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1218  }
1219}
1220
1221bool Browser::PreHandleGestureEvent(content::WebContents* source,
1222                                    const blink::WebGestureEvent& event) {
1223  // Disable pinch zooming in undocked dev tools window due to poor UX.
1224  if (app_name() == DevToolsWindow::kDevToolsApp)
1225    return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1226           event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1227           event.type == blink::WebGestureEvent::GesturePinchEnd;
1228
1229  return false;
1230}
1231
1232bool Browser::IsMouseLocked() const {
1233  return fullscreen_controller_->IsMouseLocked();
1234}
1235
1236void Browser::OnWindowDidShow() {
1237  if (window_has_shown_)
1238    return;
1239  window_has_shown_ = true;
1240
1241// CurrentProcessInfo::CreationTime() is missing on some platforms.
1242#if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1243  // Measure the latency from startup till the first browser window becomes
1244  // visible.
1245  static bool is_first_browser_window = true;
1246  if (is_first_browser_window &&
1247      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1248    is_first_browser_window = false;
1249    const base::Time process_creation_time =
1250        base::CurrentProcessInfo::CreationTime();
1251
1252    if (!process_creation_time.is_null()) {
1253      UMA_HISTOGRAM_LONG_TIMES(
1254          "Startup.BrowserWindowDisplay",
1255          base::Time::Now() - process_creation_time);
1256    }
1257  }
1258#endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1259
1260  // Nothing to do for non-tabbed windows.
1261  if (!is_type_tabbed())
1262    return;
1263
1264  // Show any pending global error bubble.
1265  GlobalErrorService* service =
1266      GlobalErrorServiceFactory::GetForProfile(profile());
1267  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1268  if (error)
1269    error->ShowBubbleView(this);
1270}
1271
1272void Browser::ShowFirstRunBubble() {
1273  window()->GetLocationBar()->ShowFirstRunBubble();
1274}
1275
1276void Browser::ShowDownload(content::DownloadItem* download) {
1277  if (!window())
1278    return;
1279
1280  // If the download occurs in a new tab, and it's not a save page
1281  // download (started before initial navigation completed) close it.
1282  WebContents* source = download->GetWebContents();
1283  if (source && source->GetController().IsInitialNavigation() &&
1284      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1285    CloseContents(source);
1286  }
1287
1288  // Some (app downloads) are not supposed to appear on the shelf.
1289  if (!DownloadItemModel(download).ShouldShowInShelf())
1290    return;
1291
1292  // GetDownloadShelf creates the download shelf if it was not yet created.
1293  DownloadShelf* shelf = window()->GetDownloadShelf();
1294  shelf->AddDownload(download);
1295}
1296
1297///////////////////////////////////////////////////////////////////////////////
1298// Browser, content::WebContentsDelegate implementation:
1299
1300WebContents* Browser::OpenURLFromTab(WebContents* source,
1301                                     const OpenURLParams& params) {
1302  chrome::NavigateParams nav_params(this, params.url, params.transition);
1303  FillNavigateParamsFromOpenURLParams(&nav_params, params);
1304  nav_params.source_contents = source;
1305  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1306  if (params.user_gesture)
1307    nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1308  nav_params.user_gesture = params.user_gesture;
1309
1310  PopupBlockerTabHelper* popup_blocker_helper = NULL;
1311  if (source)
1312    popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1313
1314  if (popup_blocker_helper) {
1315    if ((params.disposition == NEW_POPUP ||
1316         params.disposition == NEW_FOREGROUND_TAB ||
1317         params.disposition == NEW_BACKGROUND_TAB ||
1318         params.disposition == NEW_WINDOW) &&
1319        !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1320                                    switches::kDisablePopupBlocking)) {
1321      if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1322                                                WebWindowFeatures())) {
1323        return NULL;
1324      }
1325    }
1326  }
1327
1328  chrome::Navigate(&nav_params);
1329
1330  return nav_params.target_contents;
1331}
1332
1333void Browser::NavigationStateChanged(const WebContents* source,
1334                                     unsigned changed_flags) {
1335  // Only update the UI when something visible has changed.
1336  if (changed_flags)
1337    ScheduleUIUpdate(source, changed_flags);
1338
1339  // We can synchronously update commands since they will only change once per
1340  // navigation, so we don't have to worry about flickering. We do, however,
1341  // need to update the command state early on load to always present usable
1342  // actions in the face of slow-to-commit pages.
1343  if (changed_flags & (content::INVALIDATE_TYPE_URL |
1344                       content::INVALIDATE_TYPE_LOAD))
1345    command_controller_->TabStateChanged();
1346}
1347
1348void Browser::VisibleSSLStateChanged(const WebContents* source) {
1349  // When the current tab's SSL state changes, we need to update the URL
1350  // bar to reflect the new state.
1351  DCHECK(source);
1352  if (tab_strip_model_->GetActiveWebContents() == source)
1353    UpdateToolbar(false);
1354}
1355
1356void Browser::AddNewContents(WebContents* source,
1357                             WebContents* new_contents,
1358                             WindowOpenDisposition disposition,
1359                             const gfx::Rect& initial_pos,
1360                             bool user_gesture,
1361                             bool* was_blocked) {
1362  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1363                         user_gesture, was_blocked);
1364}
1365
1366void Browser::ActivateContents(WebContents* contents) {
1367  tab_strip_model_->ActivateTabAt(
1368      tab_strip_model_->GetIndexOfWebContents(contents), false);
1369  window_->Activate();
1370}
1371
1372void Browser::DeactivateContents(WebContents* contents) {
1373  window_->Deactivate();
1374}
1375
1376void Browser::LoadingStateChanged(WebContents* source,
1377    bool to_different_document) {
1378  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1379  window_->UpdateTitleBar();
1380
1381  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1382  if (source == selected_contents) {
1383    bool is_loading = source->IsLoading() && to_different_document;
1384    command_controller_->LoadingStateChanged(is_loading, false);
1385    if (GetStatusBubble()) {
1386      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1387          tab_strip_model_->GetActiveWebContents())->GetStatusText());
1388    }
1389  }
1390}
1391
1392void Browser::CloseContents(WebContents* source) {
1393  bool can_close_contents;
1394  if (IsFastTabUnloadEnabled())
1395    can_close_contents = fast_unload_controller_->CanCloseContents(source);
1396  else
1397    can_close_contents = unload_controller_->CanCloseContents(source);
1398
1399  if (can_close_contents)
1400    chrome::CloseWebContents(this, source, true);
1401}
1402
1403void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1404  if (!IsPopupOrPanel(source)) {
1405    NOTREACHED() << "moving invalid browser type";
1406    return;
1407  }
1408  window_->SetBounds(pos);
1409}
1410
1411bool Browser::IsPopupOrPanel(const WebContents* source) const {
1412  return is_type_popup();
1413}
1414
1415void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1416                              const GURL& url) {
1417  if (!GetStatusBubble())
1418    return;
1419
1420  if (source == tab_strip_model_->GetActiveWebContents()) {
1421    PrefService* prefs = profile_->GetPrefs();
1422    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1423  }
1424}
1425
1426void Browser::ContentsMouseEvent(
1427    WebContents* source, const gfx::Point& location, bool motion) {
1428  if (!GetStatusBubble())
1429    return;
1430
1431  if (source == tab_strip_model_->GetActiveWebContents()) {
1432    GetStatusBubble()->MouseMoved(location, !motion);
1433    if (!motion)
1434      GetStatusBubble()->SetURL(GURL(), std::string());
1435  }
1436}
1437
1438void Browser::ContentsZoomChange(bool zoom_in) {
1439  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1440}
1441
1442void Browser::WebContentsFocused(WebContents* contents) {
1443  window_->WebContentsFocused(contents);
1444}
1445
1446bool Browser::TakeFocus(content::WebContents* source,
1447                        bool reverse) {
1448  content::NotificationService::current()->Notify(
1449      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1450      content::Source<Browser>(this),
1451      content::NotificationService::NoDetails());
1452  return false;
1453}
1454
1455gfx::Rect Browser::GetRootWindowResizerRect() const {
1456  return window_->GetRootWindowResizerRect();
1457}
1458
1459void Browser::BeforeUnloadFired(WebContents* web_contents,
1460                                bool proceed,
1461                                bool* proceed_to_fire_unload) {
1462  if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1463        proceed, proceed_to_fire_unload))
1464    return;
1465
1466  if (IsFastTabUnloadEnabled()) {
1467    *proceed_to_fire_unload =
1468        fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1469  } else {
1470    *proceed_to_fire_unload =
1471        unload_controller_->BeforeUnloadFired(web_contents, proceed);
1472  }
1473}
1474
1475bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1476  const content::NavigationEntry* entry =
1477      source->GetController().GetActiveEntry();
1478  if (entry) {
1479    GURL url = entry->GetURL();
1480    GURL virtual_url = entry->GetVirtualURL();
1481    if ((url.SchemeIs(content::kChromeUIScheme) &&
1482        url.host() == chrome::kChromeUINewTabHost) ||
1483        (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1484        virtual_url.host() == chrome::kChromeUINewTabHost)) {
1485      return true;
1486    }
1487  }
1488
1489  return chrome::NavEntryIsInstantNTP(source, entry);
1490}
1491
1492void Browser::SetFocusToLocationBar(bool select_all) {
1493  // Two differences between this and FocusLocationBar():
1494  // (1) This doesn't get recorded in user metrics, since it's called
1495  //     internally.
1496  // (2) This checks whether the location bar can be focused, and if not, clears
1497  //     the focus.  FocusLocationBar() is only reached when the location bar is
1498  //     focusable, but this may be reached at other times, e.g. while in
1499  //     fullscreen mode, where we need to leave focus in a consistent state.
1500  window_->SetFocusToLocationBar(select_all);
1501}
1502
1503int Browser::GetExtraRenderViewHeight() const {
1504  return window_->GetExtraRenderViewHeight();
1505}
1506
1507void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1508  DCHECK(source);
1509  chrome::ViewSource(this, source);
1510}
1511
1512void Browser::ViewSourceForFrame(WebContents* source,
1513                                 const GURL& frame_url,
1514                                 const content::PageState& frame_page_state) {
1515  DCHECK(source);
1516  chrome::ViewSource(this, source, frame_url, frame_page_state);
1517}
1518
1519void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1520  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1521                                source);
1522}
1523
1524bool Browser::ShouldCreateWebContents(
1525    WebContents* web_contents,
1526    int route_id,
1527    WindowContainerType window_container_type,
1528    const base::string16& frame_name,
1529    const GURL& target_url,
1530    const std::string& partition_id,
1531    content::SessionStorageNamespace* session_storage_namespace) {
1532  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1533    // If a BackgroundContents is created, suppress the normal WebContents.
1534    return !MaybeCreateBackgroundContents(route_id,
1535                                          web_contents,
1536                                          frame_name,
1537                                          target_url,
1538                                          partition_id,
1539                                          session_storage_namespace);
1540  }
1541
1542  return true;
1543}
1544
1545void Browser::WebContentsCreated(WebContents* source_contents,
1546                                 int opener_render_frame_id,
1547                                 const base::string16& frame_name,
1548                                 const GURL& target_url,
1549                                 WebContents* new_contents) {
1550  // Adopt the WebContents now, so all observers are in place, as the network
1551  // requests for its initial navigation will start immediately. The WebContents
1552  // will later be inserted into this browser using Browser::Navigate via
1553  // AddNewContents.
1554  TabHelpers::AttachTabHelpers(new_contents);
1555
1556  // Notify.
1557  RetargetingDetails details;
1558  details.source_web_contents = source_contents;
1559  details.source_render_frame_id = opener_render_frame_id;
1560  details.target_url = target_url;
1561  details.target_web_contents = new_contents;
1562  details.not_yet_in_tabstrip = true;
1563  content::NotificationService::current()->Notify(
1564      chrome::NOTIFICATION_RETARGETING,
1565      content::Source<Profile>(profile_),
1566      content::Details<RetargetingDetails>(&details));
1567}
1568
1569void Browser::RendererUnresponsive(WebContents* source) {
1570  // Ignore hangs if a tab is blocked.
1571  int index = tab_strip_model_->GetIndexOfWebContents(source);
1572  DCHECK_NE(TabStripModel::kNoTab, index);
1573  if (tab_strip_model_->IsTabBlocked(index))
1574    return;
1575
1576  chrome::ShowHungRendererDialog(source);
1577}
1578
1579void Browser::RendererResponsive(WebContents* source) {
1580  chrome::HideHungRendererDialog(source);
1581}
1582
1583void Browser::WorkerCrashed(WebContents* source) {
1584  SimpleAlertInfoBarDelegate::Create(
1585      InfoBarService::FromWebContents(source),
1586      infobars::InfoBarDelegate::kNoIconID,
1587      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1588}
1589
1590void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1591  if (web_contents == tab_strip_model_->GetActiveWebContents())
1592    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1593}
1594
1595void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1596  if (web_contents == tab_strip_model_->GetActiveWebContents())
1597    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1598}
1599
1600content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1601  return GetJavaScriptDialogManagerInstance();
1602}
1603
1604content::ColorChooser* Browser::OpenColorChooser(
1605      WebContents* web_contents,
1606      SkColor initial_color,
1607      const std::vector<content::ColorSuggestion>& suggestions) {
1608  return chrome::ShowColorChooser(web_contents, initial_color);
1609}
1610
1611void Browser::RunFileChooser(WebContents* web_contents,
1612                             const content::FileChooserParams& params) {
1613  FileSelectHelper::RunFileChooser(web_contents, params);
1614}
1615
1616void Browser::EnumerateDirectory(WebContents* web_contents,
1617                                 int request_id,
1618                                 const base::FilePath& path) {
1619  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1620}
1621
1622bool Browser::EmbedsFullscreenWidget() const {
1623  return true;
1624}
1625
1626void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1627                                         bool enter_fullscreen) {
1628  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1629                                                     enter_fullscreen);
1630}
1631
1632bool Browser::IsFullscreenForTabOrPending(
1633    const WebContents* web_contents) const {
1634  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1635}
1636
1637void Browser::RegisterProtocolHandler(WebContents* web_contents,
1638                                      const std::string& protocol,
1639                                      const GURL& url,
1640                                      bool user_gesture) {
1641  Profile* profile =
1642      Profile::FromBrowserContext(web_contents->GetBrowserContext());
1643  if (profile->IsOffTheRecord())
1644    return;
1645
1646  ProtocolHandler handler =
1647      ProtocolHandler::CreateProtocolHandler(protocol, url);
1648
1649  ProtocolHandlerRegistry* registry =
1650      ProtocolHandlerRegistryFactory::GetForProfile(profile);
1651  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1652    return;
1653
1654  TabSpecificContentSettings* tab_content_settings =
1655      TabSpecificContentSettings::FromWebContents(web_contents);
1656  if (!user_gesture && window_) {
1657    tab_content_settings->set_pending_protocol_handler(handler);
1658    tab_content_settings->set_previous_protocol_handler(
1659        registry->GetHandlerFor(handler.protocol()));
1660    window_->GetLocationBar()->UpdateContentSettingsIcons();
1661    return;
1662  }
1663
1664  // Make sure content-setting icon is turned off in case the page does
1665  // ungestured and gestured RPH calls.
1666  if (window_) {
1667    tab_content_settings->ClearPendingProtocolHandler();
1668    window_->GetLocationBar()->UpdateContentSettingsIcons();
1669  }
1670
1671  PermissionBubbleManager* bubble_manager =
1672      PermissionBubbleManager::FromWebContents(web_contents);
1673  if (PermissionBubbleManager::Enabled() && bubble_manager) {
1674    bubble_manager->AddRequest(
1675        new RegisterProtocolHandlerPermissionRequest(registry, handler,
1676                                                     url, user_gesture));
1677  } else {
1678    RegisterProtocolHandlerInfoBarDelegate::Create(
1679        InfoBarService::FromWebContents(web_contents), registry, handler);
1680  }
1681}
1682
1683void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1684                                        const std::string& protocol,
1685                                        const GURL& url,
1686                                        bool user_gesture) {
1687  // user_gesture will be used in case we decide to have confirmation bubble
1688  // for user while un-registering the handler.
1689  Profile* profile =
1690      Profile::FromBrowserContext(web_contents->GetBrowserContext());
1691  if (profile->IsOffTheRecord())
1692    return;
1693
1694  ProtocolHandler handler =
1695      ProtocolHandler::CreateProtocolHandler(protocol, url);
1696
1697  ProtocolHandlerRegistry* registry =
1698      ProtocolHandlerRegistryFactory::GetForProfile(profile);
1699  registry->RemoveHandler(handler);
1700}
1701
1702void Browser::UpdatePreferredSize(WebContents* source,
1703                                  const gfx::Size& pref_size) {
1704  window_->UpdatePreferredSize(source, pref_size);
1705}
1706
1707void Browser::ResizeDueToAutoResize(WebContents* source,
1708                                    const gfx::Size& new_size) {
1709  window_->ResizeDueToAutoResize(source, new_size);
1710}
1711
1712void Browser::FindReply(WebContents* web_contents,
1713                        int request_id,
1714                        int number_of_matches,
1715                        const gfx::Rect& selection_rect,
1716                        int active_match_ordinal,
1717                        bool final_update) {
1718  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1719  if (!find_tab_helper)
1720    return;
1721
1722  find_tab_helper->HandleFindReply(request_id,
1723                                   number_of_matches,
1724                                   selection_rect,
1725                                   active_match_ordinal,
1726                                   final_update);
1727}
1728
1729void Browser::RequestToLockMouse(WebContents* web_contents,
1730                                 bool user_gesture,
1731                                 bool last_unlocked_by_target) {
1732  fullscreen_controller_->RequestToLockMouse(web_contents,
1733                                             user_gesture,
1734                                             last_unlocked_by_target);
1735}
1736
1737void Browser::LostMouseLock() {
1738  fullscreen_controller_->LostMouseLock();
1739}
1740
1741void Browser::RequestMediaAccessPermission(
1742    content::WebContents* web_contents,
1743    const content::MediaStreamRequest& request,
1744    const content::MediaResponseCallback& callback) {
1745  ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1746}
1747
1748bool Browser::RequestPpapiBrokerPermission(
1749    WebContents* web_contents,
1750    const GURL& url,
1751    const base::FilePath& plugin_path,
1752    const base::Callback<void(bool)>& callback) {
1753  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1754  return true;
1755}
1756
1757gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1758  // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1759  // would disappear on non-NTP pages, resulting in a bigger size for the new
1760  // render view.
1761  gfx::Size size = web_contents->GetContainerBounds().size();
1762  // Don't change render view size if bookmark bar is currently not detached,
1763  // or there's no pending entry, or navigating to a NTP page.
1764  if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1765    return size;
1766  const NavigationEntry* pending_entry =
1767      web_contents->GetController().GetPendingEntry();
1768  if (pending_entry &&
1769      !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1770    size.Enlarge(
1771        0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1772  }
1773  return size;
1774}
1775
1776///////////////////////////////////////////////////////////////////////////////
1777// Browser, CoreTabHelperDelegate implementation:
1778
1779void Browser::SwapTabContents(content::WebContents* old_contents,
1780                              content::WebContents* new_contents,
1781                              bool did_start_load,
1782                              bool did_finish_load) {
1783  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1784  DCHECK_NE(TabStripModel::kNoTab, index);
1785  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1786}
1787
1788bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1789  return chrome::CanReload(this);
1790}
1791
1792bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1793  return chrome::CanSavePage(this);
1794}
1795
1796///////////////////////////////////////////////////////////////////////////////
1797// Browser, SearchEngineTabHelperDelegate implementation:
1798
1799void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1800                                       Profile* profile) {
1801  window()->ConfirmAddSearchProvider(template_url, profile);
1802}
1803
1804///////////////////////////////////////////////////////////////////////////////
1805// Browser, SearchTabHelperDelegate implementation:
1806
1807void Browser::NavigateOnThumbnailClick(const GURL& url,
1808                                       WindowOpenDisposition disposition,
1809                                       content::WebContents* source_contents) {
1810  DCHECK(source_contents);
1811  // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1812  // gets called to handle clicks in the new tab page (to navigate to most
1813  // visited item URLs) and in the search results page (to navigate to
1814  // privileged destinations (e.g. chrome://URLs)).
1815  //
1816  // TODO(kmadhusu): Page transitions to privileged destinations should be
1817  // marked as "LINK" instead of "AUTO_BOOKMARK"?
1818  chrome::NavigateParams params(this, url,
1819                                content::PAGE_TRANSITION_AUTO_BOOKMARK);
1820  params.referrer = content::Referrer();
1821  params.source_contents = source_contents;
1822  params.disposition = disposition;
1823  params.is_renderer_initiated = false;
1824  params.initiating_profile = profile_;
1825  chrome::Navigate(&params);
1826}
1827
1828void Browser::OnWebContentsInstantSupportDisabled(
1829    const content::WebContents* web_contents) {
1830  DCHECK(web_contents);
1831  if (tab_strip_model_->GetActiveWebContents() == web_contents)
1832    UpdateToolbar(false);
1833}
1834
1835OmniboxView* Browser::GetOmniboxView() {
1836  return window_->GetLocationBar()->GetOmniboxView();
1837}
1838
1839std::set<std::string> Browser::GetOpenUrls() {
1840  history::TopSites* top_sites = profile_->GetTopSites();
1841  if (!top_sites)  // NULL for Incognito profiles.
1842    return std::set<std::string>();
1843
1844  std::set<std::string> open_urls;
1845  chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1846  return open_urls;
1847}
1848
1849///////////////////////////////////////////////////////////////////////////////
1850// Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1851
1852void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1853                                    bool blocked) {
1854  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1855  if (index == TabStripModel::kNoTab) {
1856    NOTREACHED();
1857    return;
1858  }
1859  tab_strip_model_->SetTabBlocked(index, blocked);
1860  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1861    web_contents->Focus();
1862}
1863
1864web_modal::WebContentsModalDialogHost*
1865Browser::GetWebContentsModalDialogHost() {
1866  return window_->GetWebContentsModalDialogHost();
1867}
1868
1869///////////////////////////////////////////////////////////////////////////////
1870// Browser, BookmarkTabHelperDelegate implementation:
1871
1872void Browser::URLStarredChanged(content::WebContents* web_contents,
1873                                bool starred) {
1874  if (web_contents == tab_strip_model_->GetActiveWebContents())
1875    window_->SetStarredState(starred);
1876}
1877
1878///////////////////////////////////////////////////////////////////////////////
1879// Browser, ZoomObserver implementation:
1880
1881void Browser::OnZoomChanged(const ZoomController::ZoomChangedEventData& data) {
1882  if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1883    // Only show the zoom bubble for zoom changes in the active window.
1884    window_->ZoomChangedForActiveTab(data.can_show_bubble &&
1885                                     window_->IsActive());
1886  }
1887}
1888
1889///////////////////////////////////////////////////////////////////////////////
1890// Browser, ui::SelectFileDialog::Listener implementation:
1891
1892void Browser::FileSelected(const base::FilePath& path, int index,
1893                           void* params) {
1894  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1895}
1896
1897void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1898                                        int index,
1899                                        void* params) {
1900  profile_->set_last_selected_directory(file_info.file_path.DirName());
1901
1902  GURL url = net::FilePathToFileURL(file_info.local_path);
1903
1904#if defined(OS_CHROMEOS)
1905  drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1906#endif
1907
1908  if (url.is_empty())
1909    return;
1910
1911  OpenURL(OpenURLParams(
1912      url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1913}
1914
1915///////////////////////////////////////////////////////////////////////////////
1916// Browser, content::NotificationObserver implementation:
1917
1918void Browser::Observe(int type,
1919                      const content::NotificationSource& source,
1920                      const content::NotificationDetails& details) {
1921  switch (type) {
1922    case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
1923      chrome::UpdateCommandEnabled(
1924          this,
1925          IDC_BOOKMARK_PAGE,
1926          !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1927      chrome::UpdateCommandEnabled(
1928          this,
1929          IDC_BOOKMARK_ALL_TABS,
1930          !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1931
1932      if (window()->GetLocationBar())
1933        window()->GetLocationBar()->UpdatePageActions();
1934
1935      const extensions::UnloadedExtensionInfo* extension_info =
1936          content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1937
1938      // Close any tabs from the unloaded extension, unless it's terminated,
1939      // in which case let the sad tabs remain.
1940      if (extension_info->reason !=
1941          extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1942        const Extension* extension = extension_info->extension;
1943        // Iterate backwards as we may remove items while iterating.
1944        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1945          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1946          // Two cases are handled here:
1947          // - The scheme check is for when an extension page is loaded in a
1948          //   tab, e.g. chrome-extension://id/page.html.
1949          // - The extension_app check is for apps, which can have non-extension
1950          //   schemes, e.g. https://mail.google.com if you have the Gmail app
1951          //   installed.
1952          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1953               web_contents->GetURL().host() == extension->id()) ||
1954              (extensions::TabHelper::FromWebContents(
1955                   web_contents)->extension_app() == extension)) {
1956            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1957          }
1958        }
1959      }
1960      break;
1961    }
1962
1963    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1964      Profile* profile = content::Source<Profile>(source).ptr();
1965      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1966        window()->GetLocationBar()->InvalidatePageActions();
1967      break;
1968    }
1969
1970    case chrome::NOTIFICATION_EXTENSION_LOADED_DEPRECATED:
1971      chrome::UpdateCommandEnabled(
1972          this,
1973          IDC_BOOKMARK_PAGE,
1974          !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1975      chrome::UpdateCommandEnabled(
1976          this,
1977          IDC_BOOKMARK_ALL_TABS,
1978          !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1979    // fallthrough
1980    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED:
1981      // During window creation on Windows we may end up calling into
1982      // SHAppBarMessage, which internally spawns a nested message loop. This
1983      // makes it possible for us to end up here before window creation has
1984      // completed, at which point window_ is NULL. See 94752 for details.
1985      if (window() && window()->GetLocationBar())
1986        window()->GetLocationBar()->UpdatePageActions();
1987      break;
1988
1989#if defined(ENABLE_THEMES)
1990    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1991      window()->UserChangedTheme();
1992      break;
1993#endif
1994
1995    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1996      WebContents* web_contents = content::Source<WebContents>(source).ptr();
1997      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1998        LocationBar* location_bar = window()->GetLocationBar();
1999        if (location_bar)
2000          location_bar->UpdateContentSettingsIcons();
2001      }
2002      break;
2003    }
2004
2005    default:
2006      NOTREACHED() << "Got a notification we didn't register for.";
2007  }
2008}
2009
2010///////////////////////////////////////////////////////////////////////////////
2011// Browser, Command and state updating (private):
2012
2013void Browser::OnDevToolsDisabledChanged() {
2014  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2015    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
2016}
2017
2018///////////////////////////////////////////////////////////////////////////////
2019// Browser, UI update coalescing and handling (private):
2020
2021void Browser::UpdateToolbar(bool should_restore_state) {
2022  window_->UpdateToolbar(should_restore_state ?
2023      tab_strip_model_->GetActiveWebContents() : NULL);
2024}
2025
2026void Browser::ScheduleUIUpdate(const WebContents* source,
2027                               unsigned changed_flags) {
2028  DCHECK(source);
2029  int index = tab_strip_model_->GetIndexOfWebContents(source);
2030  DCHECK_NE(TabStripModel::kNoTab, index);
2031
2032  // Do some synchronous updates.
2033  if (changed_flags & content::INVALIDATE_TYPE_URL &&
2034      source == tab_strip_model_->GetActiveWebContents()) {
2035    // Only update the URL for the current tab. Note that we do not update
2036    // the navigation commands since those would have already been updated
2037    // synchronously by NavigationStateChanged.
2038    UpdateToolbar(false);
2039    changed_flags &= ~content::INVALIDATE_TYPE_URL;
2040  }
2041  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2042    // Update the loading state synchronously. This is so the throbber will
2043    // immediately start/stop, which gives a more snappy feel. We want to do
2044    // this for any tab so they start & stop quickly.
2045    tab_strip_model_->UpdateWebContentsStateAt(
2046        tab_strip_model_->GetIndexOfWebContents(source),
2047        TabStripModelObserver::LOADING_ONLY);
2048    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2049    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2050    // changed_flags.
2051  }
2052
2053  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2054    // To correctly calculate whether the title changed while not loading
2055    // we need to process the update synchronously. This state only matters for
2056    // the TabStripModel, so we notify the TabStripModel now and notify others
2057    // asynchronously.
2058    tab_strip_model_->UpdateWebContentsStateAt(
2059        tab_strip_model_->GetIndexOfWebContents(source),
2060        TabStripModelObserver::TITLE_NOT_LOADING);
2061  }
2062
2063  // If the only updates were synchronously handled above, we're done.
2064  if (changed_flags == 0)
2065    return;
2066
2067  // Save the dirty bits.
2068  scheduled_updates_[source] |= changed_flags;
2069
2070  if (!chrome_updater_factory_.HasWeakPtrs()) {
2071    // No task currently scheduled, start another.
2072    base::MessageLoop::current()->PostDelayedTask(
2073        FROM_HERE,
2074        base::Bind(&Browser::ProcessPendingUIUpdates,
2075                   chrome_updater_factory_.GetWeakPtr()),
2076        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2077  }
2078}
2079
2080void Browser::ProcessPendingUIUpdates() {
2081#ifndef NDEBUG
2082  // Validate that all tabs we have pending updates for exist. This is scary
2083  // because the pending list must be kept in sync with any detached or
2084  // deleted tabs.
2085  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2086       i != scheduled_updates_.end(); ++i) {
2087    bool found = false;
2088    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2089      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2090        found = true;
2091        break;
2092      }
2093    }
2094    DCHECK(found);
2095  }
2096#endif
2097
2098  chrome_updater_factory_.InvalidateWeakPtrs();
2099
2100  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2101       i != scheduled_updates_.end(); ++i) {
2102    // Do not dereference |contents|, it may be out-of-date!
2103    const WebContents* contents = i->first;
2104    unsigned flags = i->second;
2105
2106    if (contents == tab_strip_model_->GetActiveWebContents()) {
2107      // Updates that only matter when the tab is selected go here.
2108
2109      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
2110        LocationBar* location_bar = window()->GetLocationBar();
2111        if (location_bar)
2112          location_bar->UpdatePageActions();
2113      }
2114      // Updating the URL happens synchronously in ScheduleUIUpdate.
2115      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2116        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2117            tab_strip_model_->GetActiveWebContents())->GetStatusText());
2118      }
2119
2120      if (flags & (content::INVALIDATE_TYPE_TAB |
2121                   content::INVALIDATE_TYPE_TITLE)) {
2122        window_->UpdateTitleBar();
2123      }
2124    }
2125
2126    // Updates that don't depend upon the selected state go here.
2127    if (flags &
2128        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2129      tab_strip_model_->UpdateWebContentsStateAt(
2130          tab_strip_model_->GetIndexOfWebContents(contents),
2131          TabStripModelObserver::ALL);
2132    }
2133
2134    // Update the bookmark bar. It may happen that the tab is crashed, and if
2135    // so, the bookmark bar should be hidden.
2136    if (flags & content::INVALIDATE_TYPE_TAB)
2137      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2138
2139    // We don't need to process INVALIDATE_STATE, since that's not visible.
2140  }
2141
2142  scheduled_updates_.clear();
2143}
2144
2145void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2146  if (!contents)
2147    return;
2148
2149  UpdateMap::iterator i = scheduled_updates_.find(contents);
2150  if (i != scheduled_updates_.end())
2151    scheduled_updates_.erase(i);
2152}
2153
2154///////////////////////////////////////////////////////////////////////////////
2155// Browser, Getters for UI (private):
2156
2157StatusBubble* Browser::GetStatusBubble() {
2158  // In kiosk and exclusive app mode, we want to always hide the status bubble.
2159  if (chrome::IsRunningInAppMode())
2160    return NULL;
2161
2162  return window_ ? window_->GetStatusBubble() : NULL;
2163}
2164
2165///////////////////////////////////////////////////////////////////////////////
2166// Browser, Session restore functions (private):
2167
2168void Browser::SyncHistoryWithTabs(int index) {
2169  SessionService* session_service =
2170      SessionServiceFactory::GetForProfileIfExisting(profile());
2171  if (session_service) {
2172    for (int i = index; i < tab_strip_model_->count(); ++i) {
2173      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2174      if (web_contents) {
2175        SessionTabHelper* session_tab_helper =
2176            SessionTabHelper::FromWebContents(web_contents);
2177        session_service->SetTabIndexInWindow(
2178            session_id(), session_tab_helper->session_id(), i);
2179        session_service->SetPinnedState(
2180            session_id(),
2181            session_tab_helper->session_id(),
2182            tab_strip_model_->IsTabPinned(i));
2183      }
2184    }
2185  }
2186}
2187
2188///////////////////////////////////////////////////////////////////////////////
2189// Browser, In-progress download termination handling (private):
2190
2191bool Browser::CanCloseWithInProgressDownloads() {
2192  // If we've prompted, we need to hear from the user before we
2193  // can close.
2194  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2195    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2196
2197  int num_downloads_blocking;
2198  Browser::DownloadClosePreventionType dialog_type =
2199      OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2200  if (dialog_type == DOWNLOAD_CLOSE_OK)
2201    return true;
2202
2203  // Closing this window will kill some downloads; prompt to make sure
2204  // that's ok.
2205  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2206  window_->ConfirmBrowserCloseWithPendingDownloads(
2207      num_downloads_blocking,
2208      dialog_type,
2209      false,
2210      base::Bind(&Browser::InProgressDownloadResponse,
2211                 weak_factory_.GetWeakPtr()));
2212
2213  // Return false so the browser does not close.  We'll close if the user
2214  // confirms in the dialog.
2215  return false;
2216}
2217
2218///////////////////////////////////////////////////////////////////////////////
2219// Browser, Assorted utility functions (private):
2220
2221void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2222  Browser* delegate = set_delegate ? this : NULL;
2223  // WebContents...
2224  web_contents->SetDelegate(delegate);
2225
2226  // ...and all the helpers.
2227  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2228  WebContentsModalDialogManager::FromWebContents(web_contents)->
2229      SetDelegate(delegate);
2230  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2231  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2232  SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2233  if (delegate)
2234    ZoomController::FromWebContents(web_contents)->AddObserver(this);
2235  else
2236    ZoomController::FromWebContents(web_contents)->RemoveObserver(this);
2237  ChromeTranslateClient* chrome_translate_client =
2238      ChromeTranslateClient::FromWebContents(web_contents);
2239  chrome_translate_client->translate_driver().set_observer(
2240      delegate ? delegate->translate_driver_observer_.get() : NULL);
2241}
2242
2243void Browser::CloseFrame() {
2244  window_->Close();
2245}
2246
2247void Browser::TabDetachedAtImpl(content::WebContents* contents,
2248                                int index,
2249                                DetachType type) {
2250  if (type == DETACH_TYPE_DETACH) {
2251    // Save the current location bar state, but only if the tab being detached
2252    // is the selected tab.  Because saving state can conditionally revert the
2253    // location bar, saving the current tab's location bar state to a
2254    // non-selected tab can corrupt both tabs.
2255    if (contents == tab_strip_model_->GetActiveWebContents()) {
2256      LocationBar* location_bar = window()->GetLocationBar();
2257      if (location_bar)
2258        location_bar->SaveStateToContents(contents);
2259    }
2260
2261    if (!tab_strip_model_->closing_all())
2262      SyncHistoryWithTabs(0);
2263  }
2264
2265  SetAsDelegate(contents, false);
2266  RemoveScheduledUpdatesFor(contents);
2267
2268  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2269    find_bar_controller_->ChangeWebContents(NULL);
2270  }
2271
2272  // Stop observing search model changes for this tab.
2273  search_delegate_->OnTabDetached(contents);
2274
2275  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2276    if (interstitial_observers_[i]->web_contents() != contents)
2277      continue;
2278
2279    delete interstitial_observers_[i];
2280    interstitial_observers_.erase(interstitial_observers_.begin() + i);
2281    return;
2282  }
2283}
2284
2285bool Browser::ShouldShowLocationBar() const {
2286  // Tabbed browser always show a location bar.
2287  if (is_type_tabbed())
2288    return true;
2289
2290  if (is_app()) {
2291    if (CommandLine::ForCurrentProcess()->HasSwitch(
2292            switches::kEnableStreamlinedHostedApps)) {
2293      // If kEnableStreamlinedHostedApps is true, show the location bar for
2294      // bookmark apps.
2295      ExtensionService* service =
2296          extensions::ExtensionSystem::Get(profile_)->extension_service();
2297      const extensions::Extension* extension =
2298          service ? service->GetInstalledExtension(
2299                        web_app::GetExtensionIdFromApplicationName(app_name()))
2300                  : NULL;
2301      return (!extension || extension->from_bookmark()) &&
2302             app_name() != DevToolsWindow::kDevToolsApp;
2303    } else {
2304      return false;
2305    }
2306  }
2307
2308  // Trusted app windows and system windows never show a location bar.
2309  return !is_trusted_source();
2310}
2311
2312bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2313                                        bool check_fullscreen) const {
2314  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2315
2316  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2317
2318  if (is_type_tabbed())
2319    features |= FEATURE_BOOKMARKBAR;
2320
2321  if (!hide_ui_for_fullscreen) {
2322    if (!is_type_tabbed())
2323      features |= FEATURE_TITLEBAR;
2324
2325    if (is_type_tabbed())
2326      features |= FEATURE_TABSTRIP;
2327
2328    if (is_type_tabbed())
2329      features |= FEATURE_TOOLBAR;
2330
2331    if (ShouldShowLocationBar())
2332      features |= FEATURE_LOCATIONBAR;
2333  }
2334  return !!(features & feature);
2335}
2336
2337void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2338  BookmarkBar::State state;
2339  // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2340  // mode, unless on the new tab page.
2341  if (profile_->IsGuestSession()) {
2342    state = BookmarkBar::HIDDEN;
2343  } else if (browser_defaults::bookmarks_enabled &&
2344      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2345      !ShouldHideUIForFullscreen()) {
2346    state = BookmarkBar::SHOW;
2347  } else {
2348    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2349    BookmarkTabHelper* bookmark_tab_helper =
2350        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2351    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2352      state = BookmarkBar::DETACHED;
2353    else
2354      state = BookmarkBar::HIDDEN;
2355  }
2356
2357  if (state == bookmark_bar_state_)
2358    return;
2359
2360  bookmark_bar_state_ = state;
2361
2362  if (!window_)
2363    return;  // This is called from the constructor when window_ is NULL.
2364
2365  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2366    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2367    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2368    // end up querying state once they process the tab switch.
2369    return;
2370  }
2371
2372  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2373  window_->BookmarkBarStateChanged(shouldAnimate ?
2374      BookmarkBar::ANIMATE_STATE_CHANGE :
2375      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2376}
2377
2378bool Browser::ShouldHideUIForFullscreen() const {
2379  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2380  // keep the controls in a slide-down panel.
2381  return window_ && window_->ShouldHideUIForFullscreen();
2382}
2383
2384bool Browser::MaybeCreateBackgroundContents(
2385    int route_id,
2386    WebContents* opener_web_contents,
2387    const base::string16& frame_name,
2388    const GURL& target_url,
2389    const std::string& partition_id,
2390    content::SessionStorageNamespace* session_storage_namespace) {
2391  GURL opener_url = opener_web_contents->GetURL();
2392  ExtensionService* extensions_service =
2393      extensions::ExtensionSystem::Get(profile_)->extension_service();
2394
2395  if (!opener_url.is_valid() ||
2396      frame_name.empty() ||
2397      !extensions_service ||
2398      !extensions_service->is_ready())
2399    return false;
2400
2401  // Only hosted apps have web extents, so this ensures that only hosted apps
2402  // can create BackgroundContents. We don't have to check for background
2403  // permission as that is checked in RenderMessageFilter when the CreateWindow
2404  // message is processed.
2405  const Extension* extension =
2406      extensions_service->extensions()->GetHostedAppByURL(opener_url);
2407  if (!extension)
2408    return false;
2409
2410  // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2411  BackgroundContentsService* service =
2412      BackgroundContentsServiceFactory::GetForProfile(profile_);
2413  if (!service)
2414    return false;
2415
2416  // Ensure that we're trying to open this from the extension's process.
2417  SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2418  extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2419  if (!opener_site_instance->GetProcess() ||
2420      !process_map->Contains(
2421          extension->id(), opener_site_instance->GetProcess()->GetID())) {
2422    return false;
2423  }
2424
2425  // Only allow a single background contents per app.
2426  bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2427  BackgroundContents* existing =
2428      service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2429  if (existing) {
2430    // For non-scriptable background contents, ignore the request altogether,
2431    // (returning true, so that a regular WebContents isn't created either).
2432    if (!allow_js_access)
2433      return true;
2434    // For scriptable background pages, if one already exists, close it (even
2435    // if it was specified in the manifest).
2436    delete existing;
2437  }
2438
2439  // If script access is not allowed, create the the background contents in a
2440  // new SiteInstance, so that a separate process is used.
2441  scoped_refptr<content::SiteInstance> site_instance =
2442      allow_js_access ?
2443      opener_site_instance :
2444      content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2445
2446  // Passed all the checks, so this should be created as a BackgroundContents.
2447  BackgroundContents* contents =
2448      service->CreateBackgroundContents(site_instance.get(),
2449                                        route_id,
2450                                        profile_,
2451                                        frame_name,
2452                                        base::ASCIIToUTF16(extension->id()),
2453                                        partition_id,
2454                                        session_storage_namespace);
2455
2456  // When a separate process is used, the original renderer cannot access the
2457  // new window later, thus we need to navigate the window now.
2458  if (contents && !allow_js_access) {
2459    contents->web_contents()->GetController().LoadURL(
2460        target_url,
2461        content::Referrer(),
2462        content::PAGE_TRANSITION_LINK,
2463        std::string());  // No extra headers.
2464  }
2465
2466  return contents != NULL;
2467}
2468