content_browser_client.h revision f2477e01787aa58f445919b809d89e252beef54f
1// Copyright (c) 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#ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_ 6#define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_ 7 8#include <map> 9#include <string> 10#include <utility> 11#include <vector> 12 13#include "base/callback_forward.h" 14#include "base/memory/linked_ptr.h" 15#include "base/memory/scoped_ptr.h" 16#include "base/memory/scoped_vector.h" 17#include "base/values.h" 18#include "content/public/browser/certificate_request_result_type.h" 19#include "content/public/browser/file_descriptor_info.h" 20#include "content/public/common/content_client.h" 21#include "content/public/common/socket_permission_request.h" 22#include "content/public/common/window_container_type.h" 23#include "net/base/mime_util.h" 24#include "net/cookies/canonical_cookie.h" 25#include "net/url_request/url_request_job_factory.h" 26#include "third_party/WebKit/public/web/WebNotificationPresenter.h" 27#include "ui/base/window_open_disposition.h" 28#include "webkit/common/resource_type.h" 29 30#if defined(OS_POSIX) && !defined(OS_MACOSX) 31#include "base/posix/global_descriptors.h" 32#endif 33 34class CommandLine; 35class GURL; 36struct WebPreferences; 37 38namespace blink { 39struct WebWindowFeatures; 40} 41 42namespace base { 43class DictionaryValue; 44class FilePath; 45} 46namespace crypto { 47class CryptoModuleBlockingPasswordDelegate; 48} 49 50namespace gfx { 51class ImageSkia; 52} 53 54namespace net { 55class CookieOptions; 56class HttpNetworkSession; 57class NetLog; 58class SSLCertRequestInfo; 59class SSLInfo; 60class URLRequest; 61class URLRequestContext; 62class URLRequestContextGetter; 63class X509Certificate; 64} 65 66namespace sandbox { 67class TargetPolicy; 68} 69 70namespace ui { 71class SelectFilePolicy; 72} 73 74namespace fileapi { 75class ExternalMountPoints; 76class FileSystemBackend; 77} 78 79namespace content { 80 81class AccessTokenStore; 82class BrowserChildProcessHost; 83class BrowserContext; 84class BrowserMainParts; 85class BrowserPluginGuestDelegate; 86class BrowserPpapiHost; 87class BrowserURLHandler; 88class LocationProvider; 89class MediaObserver; 90class QuotaPermissionContext; 91class RenderProcessHost; 92class RenderViewHost; 93class RenderViewHostDelegateView; 94class ResourceContext; 95class SiteInstance; 96class SpeechRecognitionManagerDelegate; 97class VibrationProvider; 98class WebContents; 99class WebContentsViewDelegate; 100class WebContentsViewPort; 101struct MainFunctionParams; 102struct Referrer; 103struct ShowDesktopNotificationHostMsgParams; 104 105// A mapping from the scheme name to the protocol handler that services its 106// content. 107typedef std::map< 108 std::string, linked_ptr<net::URLRequestJobFactory::ProtocolHandler> > 109 ProtocolHandlerMap; 110 111// Embedder API (or SPI) for participating in browser logic, to be implemented 112// by the client of the content browser. See ChromeContentBrowserClient for the 113// principal implementation. The methods are assumed to be called on the UI 114// thread unless otherwise specified. Use this "escape hatch" sparingly, to 115// avoid the embedder interface ballooning and becoming very specific to Chrome. 116// (Often, the call out to the client can happen in a different part of the code 117// that either already has a hook out to the embedder, or calls out to one of 118// the observer interfaces.) 119class CONTENT_EXPORT ContentBrowserClient { 120 public: 121 virtual ~ContentBrowserClient() {} 122 123 // Allows the embedder to set any number of custom BrowserMainParts 124 // implementations for the browser startup code. See comments in 125 // browser_main_parts.h. 126 virtual BrowserMainParts* CreateBrowserMainParts( 127 const MainFunctionParams& parameters); 128 129 // Allows an embedder to return their own WebContentsViewPort implementation. 130 // Return NULL to let the default one for the platform be created. Otherwise 131 // |render_view_host_delegate_view| also needs to be provided, and it is 132 // owned by the embedder. 133 virtual WebContentsViewPort* OverrideCreateWebContentsView( 134 WebContents* web_contents, 135 RenderViewHostDelegateView** render_view_host_delegate_view); 136 137 // If content creates the WebContentsView implementation, it will ask the 138 // embedder to return an (optional) delegate to customize it. The view will 139 // own the delegate. 140 virtual WebContentsViewDelegate* GetWebContentsViewDelegate( 141 WebContents* web_contents); 142 143 // Notifies that a guest WebContents has been created. A guest WebContents 144 // represents a renderer that's hosted within a BrowserPlugin. Creation can 145 // occur an arbitrary length of time before attachment. If the new guest has 146 // an |opener_web_contents|, then it's a new window created by that opener. 147 // If the guest was created via navigation, then |extra_params| will be 148 // non-NULL. |extra_params| are parameters passed to the BrowserPlugin object 149 // element by the content embedder. These parameters may include the API to 150 // enable for the given guest. |guest_delegate| is a return parameter of 151 // the delegate in the content embedder that will service the guest in the 152 // content layer. The content layer takes ownership of the |guest_delegate|. 153 virtual void GuestWebContentsCreated( 154 SiteInstance* guest_site_instance, 155 WebContents* guest_web_contents, 156 WebContents* opener_web_contents, 157 BrowserPluginGuestDelegate** guest_delegate, 158 scoped_ptr<base::DictionaryValue> extra_params) {} 159 160 // Notifies that a guest WebContents has been attached to a BrowserPlugin. 161 // A guest is attached to a BrowserPlugin when the guest has acquired an 162 // embedder WebContents. This happens on initial navigation or when a new 163 // window is attached to a BrowserPlugin. |extra_params| are params sent 164 // from javascript. 165 virtual void GuestWebContentsAttached( 166 WebContents* guest_web_contents, 167 WebContents* embedder_web_contents, 168 const base::DictionaryValue& extra_params) {} 169 170 // Notifies that a RenderProcessHost has been created. This is called before 171 // the content layer adds its own BrowserMessageFilters, so that the 172 // embedder's IPC filters have priority. 173 virtual void RenderProcessHostCreated(RenderProcessHost* host) {} 174 175 // Notifies that a BrowserChildProcessHost has been created. 176 virtual void BrowserChildProcessHostCreated(BrowserChildProcessHost* host) {} 177 178 // Get the effective URL for the given actual URL, to allow an embedder to 179 // group different url schemes in the same SiteInstance. 180 virtual GURL GetEffectiveURL(BrowserContext* browser_context, 181 const GURL& url); 182 183 // Returns whether all instances of the specified effective URL should be 184 // rendered by the same process, rather than using process-per-site-instance. 185 virtual bool ShouldUseProcessPerSite(BrowserContext* browser_context, 186 const GURL& effective_url); 187 188 // Returns a list additional WebUI schemes, if any. These additional schemes 189 // act as aliases to the chrome: scheme. The additional schemes may or may 190 // not serve specific WebUI pages depending on the particular URLDataSource 191 // and its override of URLDataSource::ShouldServiceRequest. 192 virtual void GetAdditionalWebUISchemes( 193 std::vector<std::string>* additional_schemes) {} 194 195 // Creates the main net::URLRequestContextGetter. Should only be called once 196 // per ContentBrowserClient object. 197 // TODO(ajwong): Remove once http://crbug.com/159193 is resolved. 198 virtual net::URLRequestContextGetter* CreateRequestContext( 199 BrowserContext* browser_context, 200 ProtocolHandlerMap* protocol_handlers); 201 202 // Creates the net::URLRequestContextGetter for a StoragePartition. Should 203 // only be called once per partition_path per ContentBrowserClient object. 204 // TODO(ajwong): Remove once http://crbug.com/159193 is resolved. 205 virtual net::URLRequestContextGetter* CreateRequestContextForStoragePartition( 206 BrowserContext* browser_context, 207 const base::FilePath& partition_path, 208 bool in_memory, 209 ProtocolHandlerMap* protocol_handlers); 210 211 // Returns whether a specified URL is handled by the embedder's internal 212 // protocol handlers. 213 virtual bool IsHandledURL(const GURL& url); 214 215 // Returns whether the given process is allowed to commit |url|. This is a 216 // more conservative check than IsSuitableHost, since it is used after a 217 // navigation has committed to ensure that the process did not exceed its 218 // authority. 219 virtual bool CanCommitURL(RenderProcessHost* process_host, const GURL& url); 220 221 // Returns whether a URL should be allowed to open from a specific context. 222 // This also applies in cases where the new URL will open in another process. 223 virtual bool ShouldAllowOpenURL(SiteInstance* site_instance, const GURL& url); 224 225 // Returns whether a new view for a given |site_url| can be launched in a 226 // given |process_host|. 227 virtual bool IsSuitableHost(RenderProcessHost* process_host, 228 const GURL& site_url); 229 230 // Returns whether a new process should be created or an existing one should 231 // be reused based on the URL we want to load. This should return false, 232 // unless there is a good reason otherwise. 233 virtual bool ShouldTryToUseExistingProcessHost( 234 BrowserContext* browser_context, const GURL& url); 235 236 // Called when a site instance is first associated with a process. 237 virtual void SiteInstanceGotProcess(SiteInstance* site_instance) {} 238 239 // Called from a site instance's destructor. 240 virtual void SiteInstanceDeleting(SiteInstance* site_instance) {} 241 242 // Returns true if for the navigation from |current_url| to |new_url| 243 // in |site_instance|, a new SiteInstance and BrowsingInstance should be 244 // created (even if we are in a process model that doesn't usually swap.) 245 // This forces a process swap and severs script connections with existing 246 // tabs. 247 virtual bool ShouldSwapBrowsingInstancesForNavigation( 248 SiteInstance* site_instance, 249 const GURL& current_url, 250 const GURL& new_url); 251 252 // Returns true if the given navigation redirect should cause a renderer 253 // process swap. 254 // This is called on the IO thread. 255 virtual bool ShouldSwapProcessesForRedirect(ResourceContext* resource_context, 256 const GURL& current_url, 257 const GURL& new_url); 258 259 // Returns true if the passed in URL should be assigned as the site of the 260 // current SiteInstance, if it does not yet have a site. 261 virtual bool ShouldAssignSiteForURL(const GURL& url); 262 263 // See CharacterEncoding's comment. 264 virtual std::string GetCanonicalEncodingNameByAliasName( 265 const std::string& alias_name); 266 267 // Allows the embedder to pass extra command line flags. 268 // switches::kProcessType will already be set at this point. 269 virtual void AppendExtraCommandLineSwitches(CommandLine* command_line, 270 int child_process_id) {} 271 272 // Returns the locale used by the application. 273 // This is called on the UI and IO threads. 274 virtual std::string GetApplicationLocale(); 275 276 // Returns the languages used in the Accept-Languages HTTP header. 277 // (Not called GetAcceptLanguages so it doesn't clash with win32). 278 virtual std::string GetAcceptLangs(BrowserContext* context); 279 280 // Returns the default favicon. The callee doesn't own the given bitmap. 281 virtual gfx::ImageSkia* GetDefaultFavicon(); 282 283 // Allow the embedder to control if an AppCache can be used for the given url. 284 // This is called on the IO thread. 285 virtual bool AllowAppCache(const GURL& manifest_url, 286 const GURL& first_party, 287 ResourceContext* context); 288 289 // Allow the embedder to control if the given cookie can be read. 290 // This is called on the IO thread. 291 virtual bool AllowGetCookie(const GURL& url, 292 const GURL& first_party, 293 const net::CookieList& cookie_list, 294 ResourceContext* context, 295 int render_process_id, 296 int render_view_id); 297 298 // Allow the embedder to control if the given cookie can be set. 299 // This is called on the IO thread. 300 virtual bool AllowSetCookie(const GURL& url, 301 const GURL& first_party, 302 const std::string& cookie_line, 303 ResourceContext* context, 304 int render_process_id, 305 int render_view_id, 306 net::CookieOptions* options); 307 308 // This is called on the IO thread. 309 virtual bool AllowSaveLocalState(ResourceContext* context); 310 311 // Allow the embedder to control if access to web database by a shared worker 312 // is allowed. |render_views| is a vector of pairs of 313 // RenderProcessID/RenderViewID of RenderViews that are using this worker. 314 // This is called on the IO thread. 315 virtual bool AllowWorkerDatabase( 316 const GURL& url, 317 const string16& name, 318 const string16& display_name, 319 unsigned long estimated_size, 320 ResourceContext* context, 321 const std::vector<std::pair<int, int> >& render_views); 322 323 // Allow the embedder to control if access to file system by a shared worker 324 // is allowed. 325 // This is called on the IO thread. 326 virtual bool AllowWorkerFileSystem( 327 const GURL& url, 328 ResourceContext* context, 329 const std::vector<std::pair<int, int> >& render_views); 330 331 // Allow the embedder to control if access to IndexedDB by a shared worker 332 // is allowed. 333 // This is called on the IO thread. 334 virtual bool AllowWorkerIndexedDB( 335 const GURL& url, 336 const string16& name, 337 ResourceContext* context, 338 const std::vector<std::pair<int, int> >& render_views); 339 340 // Allow the embedder to override the request context based on the URL for 341 // certain operations, like cookie access. Returns NULL to indicate the 342 // regular request context should be used. 343 // This is called on the IO thread. 344 virtual net::URLRequestContext* OverrideRequestContextForURL( 345 const GURL& url, ResourceContext* context); 346 347 // Allow the embedder to specify a string version of the storage partition 348 // config with a site. 349 virtual std::string GetStoragePartitionIdForSite( 350 content::BrowserContext* browser_context, 351 const GURL& site); 352 353 // Allows the embedder to provide a validation check for |partition_id|s. 354 // This domain of valid entries should match the range of outputs for 355 // GetStoragePartitionIdForChildProcess(). 356 virtual bool IsValidStoragePartitionId(BrowserContext* browser_context, 357 const std::string& partition_id); 358 359 // Allows the embedder to provide a storage parititon configuration for a 360 // site. A storage partition configuration includes a domain of the embedder's 361 // choice, an optional name within that domain, and whether the partition is 362 // in-memory only. 363 // 364 // If |can_be_default| is false, the caller is telling the embedder that the 365 // |site| is known to not be in the default partition. This is useful in 366 // some shutdown situations where the bookkeeping logic that maps sites to 367 // their partition configuration are no longer valid. 368 // 369 // The |partition_domain| is [a-z]* UTF-8 string, specifying the domain in 370 // which partitions live (similar to namespace). Within a domain, partitions 371 // can be uniquely identified by the combination of |partition_name| and 372 // |in_memory| values. When a partition is not to be persisted, the 373 // |in_memory| value must be set to true. 374 virtual void GetStoragePartitionConfigForSite( 375 content::BrowserContext* browser_context, 376 const GURL& site, 377 bool can_be_default, 378 std::string* partition_domain, 379 std::string* partition_name, 380 bool* in_memory); 381 382 // Create and return a new quota permission context. 383 virtual QuotaPermissionContext* CreateQuotaPermissionContext(); 384 385 // Informs the embedder that a certificate error has occured. If 386 // |overridable| is true and if |strict_enforcement| is false, the user 387 // can ignore the error and continue. The embedder can call the callback 388 // asynchronously. If |result| is not set to 389 // CERTIFICATE_REQUEST_RESULT_TYPE_CONTINUE, the request will be cancelled 390 // or denied immediately, and the callback won't be run. 391 virtual void AllowCertificateError( 392 int render_process_id, 393 int render_view_id, 394 int cert_error, 395 const net::SSLInfo& ssl_info, 396 const GURL& request_url, 397 ResourceType::Type resource_type, 398 bool overridable, 399 bool strict_enforcement, 400 const base::Callback<void(bool)>& callback, 401 CertificateRequestResultType* result) {} 402 403 // Selects a SSL client certificate and returns it to the |callback|. If no 404 // certificate was selected NULL is returned to the |callback|. 405 virtual void SelectClientCertificate( 406 int render_process_id, 407 int render_view_id, 408 const net::HttpNetworkSession* network_session, 409 net::SSLCertRequestInfo* cert_request_info, 410 const base::Callback<void(net::X509Certificate*)>& callback) {} 411 412 // Adds a new installable certificate or private key. 413 // Typically used to install an X.509 user certificate. 414 // Note that it's up to the embedder to verify that the data is 415 // well-formed. |cert_data| will be NULL if file_size is 0. 416 virtual void AddCertificate( 417 net::URLRequest* request, 418 net::CertificateMimeType cert_type, 419 const void* cert_data, 420 size_t cert_size, 421 int render_process_id, 422 int render_view_id) {} 423 424 // Returns a class to get notifications about media event. The embedder can 425 // return NULL if they're not interested. 426 virtual MediaObserver* GetMediaObserver(); 427 428 // Asks permission to show desktop notifications. 429 virtual void RequestDesktopNotificationPermission( 430 const GURL& source_origin, 431 int callback_context, 432 int render_process_id, 433 int render_view_id) {} 434 435 // Checks if the given page has permission to show desktop notifications. 436 // This is called on the IO thread. 437 virtual blink::WebNotificationPresenter::Permission 438 CheckDesktopNotificationPermission( 439 const GURL& source_url, 440 ResourceContext* context, 441 int render_process_id); 442 443 // Show a desktop notification. If |worker| is true, the request came from an 444 // HTML5 web worker, otherwise, it came from a renderer. 445 virtual void ShowDesktopNotification( 446 const ShowDesktopNotificationHostMsgParams& params, 447 int render_process_id, 448 int render_view_id, 449 bool worker) {} 450 451 // Cancels a displayed desktop notification. 452 virtual void CancelDesktopNotification( 453 int render_process_id, 454 int render_view_id, 455 int notification_id) {} 456 457 // Returns true if the given page is allowed to open a window of the given 458 // type. If true is returned, |no_javascript_access| will indicate whether 459 // the window that is created should be scriptable/in the same process. 460 // This is called on the IO thread. 461 virtual bool CanCreateWindow(const GURL& opener_url, 462 const GURL& opener_top_level_frame_url, 463 const GURL& source_origin, 464 WindowContainerType container_type, 465 const GURL& target_url, 466 const content::Referrer& referrer, 467 WindowOpenDisposition disposition, 468 const blink::WebWindowFeatures& features, 469 bool user_gesture, 470 bool opener_suppressed, 471 content::ResourceContext* context, 472 int render_process_id, 473 bool is_guest, 474 int opener_id, 475 bool* no_javascript_access); 476 477 // Returns a title string to use in the task manager for a process host with 478 // the given URL, or the empty string to fall back to the default logic. 479 // This is called on the IO thread. 480 virtual std::string GetWorkerProcessTitle(const GURL& url, 481 ResourceContext* context); 482 483 // Notifies the embedder that the ResourceDispatcherHost has been created. 484 // This is when it can optionally add a delegate. 485 virtual void ResourceDispatcherHostCreated() {} 486 487 // Allows the embedder to return a delegate for the SpeechRecognitionManager. 488 // The delegate will be owned by the manager. It's valid to return NULL. 489 virtual SpeechRecognitionManagerDelegate* 490 GetSpeechRecognitionManagerDelegate(); 491 492 // Getters for common objects. 493 virtual net::NetLog* GetNetLog(); 494 495 // Creates a new AccessTokenStore for gelocation. 496 virtual AccessTokenStore* CreateAccessTokenStore(); 497 498 // Returns true if fast shutdown is possible. 499 virtual bool IsFastShutdownPossible(); 500 501 // Called by WebContents to override the WebKit preferences that are used by 502 // the renderer. The content layer will add its own settings, and then it's up 503 // to the embedder to update it if it wants. 504 virtual void OverrideWebkitPrefs(RenderViewHost* render_view_host, 505 const GURL& url, 506 WebPreferences* prefs) {} 507 508 // Inspector setting was changed and should be persisted. 509 virtual void UpdateInspectorSetting(RenderViewHost* rvh, 510 const std::string& key, 511 const std::string& value) {} 512 513 // Notifies that BrowserURLHandler has been created, so that the embedder can 514 // optionally add their own handlers. 515 virtual void BrowserURLHandlerCreated(BrowserURLHandler* handler) {} 516 517 // Clears browser cache. 518 virtual void ClearCache(RenderViewHost* rvh) {} 519 520 // Clears browser cookies. 521 virtual void ClearCookies(RenderViewHost* rvh) {} 522 523 // Returns the default download directory. 524 // This can be called on any thread. 525 virtual base::FilePath GetDefaultDownloadDirectory(); 526 527 // Returns the default filename used in downloads when we have no idea what 528 // else we should do with the file. 529 virtual std::string GetDefaultDownloadName(); 530 531 // Notification that a pepper plugin has just been spawned. This allows the 532 // embedder to add filters onto the host to implement interfaces. 533 // This is called on the IO thread. 534 virtual void DidCreatePpapiPlugin(BrowserPpapiHost* browser_host) {} 535 536 // Gets the host for an external out-of-process plugin. 537 virtual content::BrowserPpapiHost* GetExternalBrowserPpapiHost( 538 int plugin_child_id); 539 540 // Returns true if the given browser_context and site_url support hosting 541 // BrowserPlugins. 542 virtual bool SupportsBrowserPlugin(BrowserContext* browser_context, 543 const GURL& site_url); 544 545 // Returns true if the socket operation specified by |params| is allowed from 546 // the given |browser_context| and |url|. If |params| is NULL, this method 547 // checks the basic "socket" permission, which is for those operations that 548 // don't require a specific socket permission rule. 549 // |private_api| indicates whether this permission check is for the private 550 // Pepper socket API or the public one. 551 virtual bool AllowPepperSocketAPI(BrowserContext* browser_context, 552 const GURL& url, 553 bool private_api, 554 const SocketPermissionRequest* params); 555 556 // Returns an implementation of a file selecition policy. Can return NULL. 557 virtual ui::SelectFilePolicy* CreateSelectFilePolicy( 558 WebContents* web_contents); 559 560 // Returns additional allowed scheme set which can access files in 561 // FileSystem API. 562 virtual void GetAdditionalAllowedSchemesForFileSystem( 563 std::vector<std::string>* additional_schemes) {} 564 565 // Returns additional file system backends for FileSystem API. 566 // |browser_context| is needed in the additional FileSystemBackends. 567 // It has mount points to create objects returned by additional 568 // FileSystemBackends, and SpecialStoragePolicy for permission granting. 569 virtual void GetAdditionalFileSystemBackends( 570 BrowserContext* browser_context, 571 const base::FilePath& storage_partition_path, 572 ScopedVector<fileapi::FileSystemBackend>* additional_backends) {} 573 574 // Allows an embedder to return its own LocationProvider implementation. 575 // Return NULL to use the default one for the platform to be created. 576 // FYI: Used by an external project; please don't remove. 577 // Contact Viatcheslav Ostapenko at sl.ostapenko@samsung.com for more 578 // information. 579 virtual LocationProvider* OverrideSystemLocationProvider(); 580 581 // Allows an embedder to return its own VibrationProvider implementation. 582 // Return NULL to use the default one for the platform to be created. 583 // FYI: Used by an external project; please don't remove. 584 // Contact Viatcheslav Ostapenko at sl.ostapenko@samsung.com for more 585 // information. 586 virtual VibrationProvider* OverrideVibrationProvider(); 587 588#if defined(OS_POSIX) && !defined(OS_MACOSX) 589 // Populates |mappings| with all files that need to be mapped before launching 590 // a child process. 591 virtual void GetAdditionalMappedFilesForChildProcess( 592 const CommandLine& command_line, 593 int child_process_id, 594 std::vector<FileDescriptorInfo>* mappings) {} 595#endif 596 597#if defined(OS_WIN) 598 // Returns the name of the dll that contains cursors and other resources. 599 virtual const wchar_t* GetResourceDllName(); 600 601 // This is called on the PROCESS_LAUNCHER thread before the renderer process 602 // is launched. It gives the embedder a chance to add loosen the sandbox 603 // policy. 604 virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy, 605 bool* success) {} 606#endif 607 608#if defined(USE_NSS) 609 // Return a delegate to authenticate and unlock |module|. 610 // This is called on a worker thread. 611 virtual 612 crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate( 613 const GURL& url); 614#endif 615 616 // Returns true if plugin referred to by the url can use 617 // pp::FileIO::RequestOSFileHandle. 618 virtual bool IsPluginAllowedToCallRequestOSFileHandle( 619 content::BrowserContext* browser_context, 620 const GURL& url); 621}; 622 623} // namespace content 624 625#endif // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_ 626