pref_metrics_service.cc revision 58537e28ecd584eab876aee8be7156509866d23a
1bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch// Copyright 2013 The Chromium Authors. All rights reserved. 2bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch// Use of this source code is governed by a BSD-style license that can be 3bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch// found in the LICENSE file. 4bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 5bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "chrome/browser/prefs/pref_metrics_service.h" 6bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 7ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "base/bind.h" 858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "base/command_line.h" 958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "base/json/json_string_value_serializer.h" 10bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "base/metrics/histogram.h" 1158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "base/prefs/pref_registry_simple.h" 12bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "base/prefs/pref_service.h" 1358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "base/strings/string_number_conversions.h" 1458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/browser_process.h" 1558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/browser_shutdown.h" 1658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// Accessing the Device ID API here is a layering violation. 1758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// TODO(bbudge) Move the API so it's usable here. 1858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// http://crbug.com/276485 1958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/extensions/api/music_manager_private/device_id.h" 2058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/extensions/extension_prefs.h" 21ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "chrome/browser/prefs/pref_service_syncable.h" 2258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/prefs/scoped_user_pref_update.h" 23fb250657ef40d7500f20882d5c9909c1013367d3Ben Murdoch#include "chrome/browser/prefs/session_startup_pref.h" 24ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "chrome/browser/prefs/synced_pref_change_registrar.h" 25bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "chrome/browser/profiles/incognito_helpers.h" 26bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "chrome/browser/profiles/profile.h" 273551c9c881056c480085172ff9840cab31610854Torne (Richard Coles)#include "chrome/browser/search_engines/template_url_prepopulate_data.h" 2858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/browser/ui/tabs/pinned_tab_codec.h" 2958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "chrome/common/chrome_switches.h" 30bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "chrome/common/pref_names.h" 31bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "components/browser_context_keyed_service/browser_context_dependency_manager.h" 3258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "crypto/hmac.h" 3358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "grit/browser_resources.h" 34ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "net/base/registry_controlled_domains/registry_controlled_domain.h" 3558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "ui/base/resource/resource_bundle.h" 36ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 37ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochnamespace { 38ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 39ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochconst int kSessionStartupPrefValueMax = SessionStartupPref::kPrefValueMax; 40ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 4158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// These preferences must be kept in sync with the TrackedPreference enum in 4258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// tools/metrics/histograms/histograms.xml. To add a new preference, append it 4358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// to the array and add a corresponding value to the histogram enum. 4458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)const char* kTrackedPrefs[] = { 4558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kShowHomeButton, 4658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kHomePageIsNewTabPage, 4758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kHomePage, 4858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kRestoreOnStartup, 4958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kURLsToRestoreOnStartup, 5058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kExtensionsPref, 5158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kGoogleServicesLastUsername, 5258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kSearchProviderOverrides, 5358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kDefaultSearchProviderSearchURL, 5458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kDefaultSearchProviderKeyword, 5558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kDefaultSearchProviderName, 5658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#if !defined(OS_ANDROID) 5758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs::kPinnedTabs, 5858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#endif 5958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)}; 6058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 6158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)static const size_t kSHA256DigestSize = 32; 6258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 63ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} // namespace 64bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 65bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::PrefMetricsService(Profile* profile) 6658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) : profile_(profile), 6758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs_(profile_->GetPrefs()), 6858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) local_state_(g_browser_process->local_state()), 6958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) profile_name_(profile_->GetPath().AsUTF8Unsafe()), 7058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_paths_(kTrackedPrefs), 7158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_path_count_(arraysize(kTrackedPrefs)), 7258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) checked_tracked_prefs_(false), 7358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) weak_factory_(this) { 7458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) pref_hash_seed_ = ResourceBundle::GetSharedInstance().GetRawDataResource( 7558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) IDR_PREF_HASH_SEED_BIN).as_string(); 7658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 77bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch RecordLaunchPrefs(); 78ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 79ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PrefServiceSyncable* prefs = PrefServiceSyncable::FromProfile(profile_); 80ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch synced_pref_change_registrar_.reset(new SyncedPrefChangeRegistrar(prefs)); 81ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 82ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch RegisterSyncedPrefObservers(); 8358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 8458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // The following code might cause callbacks into this instance before we exit 8558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // the constructor. This instance should be initialized at this point. 8658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 8758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Android has no GetDeviceId. 8858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#if !defined(OS_ANDROID) 8958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // We need the machine id to compute pref value hashes. Fetch that, and then 9058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // call CheckTrackedPreferences in the callback. 9158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) extensions::api::DeviceId::GetDeviceId( 9258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) "PrefMetricsService", // non-empty string to obfuscate the device id. 9358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Bind(&PrefMetricsService::GetDeviceIdCallback, 9458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) weak_factory_.GetWeakPtr())); 9558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#endif // !defined(OS_ANDROID) 9658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 9758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 9858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// For unit testing only. 9958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)PrefMetricsService::PrefMetricsService(Profile* profile, 10058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) PrefService* local_state, 10158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const std::string& device_id, 10258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char** tracked_pref_paths, 10358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) int tracked_pref_path_count) 10458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) : profile_(profile), 10558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) prefs_(profile->GetPrefs()), 10658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) local_state_(local_state), 10758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) pref_hash_seed_(kSHA256DigestSize, 0), 10858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) device_id_(device_id), 10958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_paths_(tracked_pref_paths), 11058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_path_count_(tracked_pref_path_count), 11158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) checked_tracked_prefs_(false), 11258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) weak_factory_(this) { 11358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) CheckTrackedPreferences(); 114bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 115bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 116bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::~PrefMetricsService() { 117bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 118bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 119bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdochvoid PrefMetricsService::RecordLaunchPrefs() { 12058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) bool show_home_button = prefs_->GetBoolean(prefs::kShowHomeButton); 12158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) bool home_page_is_ntp = prefs_->GetBoolean(prefs::kHomePageIsNewTabPage); 1223240926e260ce088908e02ac07a6cf7b0c0cbf44Ben Murdoch UMA_HISTOGRAM_BOOLEAN("Settings.ShowHomeButton", show_home_button); 1233240926e260ce088908e02ac07a6cf7b0c0cbf44Ben Murdoch if (show_home_button) { 1243240926e260ce088908e02ac07a6cf7b0c0cbf44Ben Murdoch UMA_HISTOGRAM_BOOLEAN("Settings.GivenShowHomeButton_HomePageIsNewTabPage", 1253551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) home_page_is_ntp); 1263240926e260ce088908e02ac07a6cf7b0c0cbf44Ben Murdoch } 1273551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) 1283551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // For non-NTP homepages, see if the URL comes from the same TLD+1 as a known 1293551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // search engine. Note that this is only an approximation of search engine 1303551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // use, due to both false negatives (pages that come from unknown TLD+1 X but 1313551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // consist of a search box that sends to known TLD+1 Y) and false positives 1323551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // (pages that share a TLD+1 with a known engine but aren't actually search 1333551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // pages, e.g. plus.google.com). 1343551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) if (!home_page_is_ntp) { 13558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) GURL homepage_url(prefs_->GetString(prefs::kHomePage)); 1363551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) if (homepage_url.is_valid()) { 1373551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION( 1383551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) "Settings.HomePageEngineType", 1393551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) TemplateURLPrepopulateData::GetEngineType(homepage_url), 1403551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) SEARCH_ENGINE_MAX); 1413551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) } 1423551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) } 1433551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) 14458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) int restore_on_startup = prefs_->GetInteger(prefs::kRestoreOnStartup); 145fb250657ef40d7500f20882d5c9909c1013367d3Ben Murdoch UMA_HISTOGRAM_ENUMERATION("Settings.StartupPageLoadSettings", 1463551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) restore_on_startup, kSessionStartupPrefValueMax); 147fb250657ef40d7500f20882d5c9909c1013367d3Ben Murdoch if (restore_on_startup == SessionStartupPref::kPrefValueURLs) { 14858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const ListValue* url_list = prefs_->GetList(prefs::kURLsToRestoreOnStartup); 1493551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Settings.StartupPageLoadURLs", 1503551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) url_list->GetSize(), 1, 50, 20); 1513551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // Similarly, check startup pages for known search engine TLD+1s. 1523551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) std::string url_text; 15358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (size_t i = 0; i < url_list->GetSize(); ++i) { 1543551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) if (url_list->GetString(i, &url_text)) { 1553551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) GURL start_url(url_text); 1563551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) if (start_url.is_valid()) { 1573551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION( 1583551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) "Settings.StartupPageEngineTypes", 1593551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) TemplateURLPrepopulateData::GetEngineType(start_url), 1603551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) SEARCH_ENGINE_MAX); 1613551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) } 1623551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) } 1633551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) } 164fb250657ef40d7500f20882d5c9909c1013367d3Ben Murdoch } 16558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 16658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#if !defined(OS_ANDROID) 16758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StartupTabs startup_tabs = PinnedTabCodec::ReadPinnedTabs(profile_); 16858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Settings.PinnedTabs", 16958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) startup_tabs.size(), 1, 50, 20); 17058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (size_t i = 0; i < startup_tabs.size(); ++i) { 17158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) GURL start_url(startup_tabs.at(i).url); 17258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (start_url.is_valid()) { 17358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_ENUMERATION( 17458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) "Settings.PinnedTabEngineTypes", 17558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) TemplateURLPrepopulateData::GetEngineType(start_url), 17658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SEARCH_ENGINE_MAX); 17758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 17858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 17958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#endif 18058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 18158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 18258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// static 18358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)void PrefMetricsService::RegisterPrefs(PrefRegistrySimple* registry) { 18458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Register the top level dictionary to map profile names to dictionaries of 18558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // tracked preferences. 18658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) registry->RegisterDictionaryPref(prefs::kProfilePreferenceHashes); 187bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 188bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 189ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::RegisterSyncedPrefObservers() { 190ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch LogHistogramValueCallback booleanHandler = base::Bind( 191ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch &PrefMetricsService::LogBooleanPrefChange, base::Unretained(this)); 192ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 193ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch AddPrefObserver(prefs::kShowHomeButton, "ShowHomeButton", booleanHandler); 194ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch AddPrefObserver(prefs::kHomePageIsNewTabPage, "HomePageIsNewTabPage", 195ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch booleanHandler); 196ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 197ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch AddPrefObserver(prefs::kRestoreOnStartup, "StartupPageLoadSettings", 198ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::Bind(&PrefMetricsService::LogIntegerPrefChange, 199ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::Unretained(this), 200ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch kSessionStartupPrefValueMax)); 201ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 202ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 203ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::AddPrefObserver( 204ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& path, 205ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& histogram_name_prefix, 206ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const LogHistogramValueCallback& callback) { 207ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch synced_pref_change_registrar_->Add(path.c_str(), 208ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::Bind(&PrefMetricsService::OnPrefChanged, 209ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::Unretained(this), 210ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch histogram_name_prefix, callback)); 211ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 212ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 213ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::OnPrefChanged( 214ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& histogram_name_prefix, 215ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const LogHistogramValueCallback& callback, 216ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& path, 217ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch bool from_sync) { 218ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PrefServiceSyncable* prefs = PrefServiceSyncable::FromProfile(profile_); 219ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const PrefService::Preference* pref = prefs->FindPreference(path.c_str()); 220ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DCHECK(pref); 221ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch std::string source_name( 222ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch from_sync ? ".PulledFromSync" : ".PushedToSync"); 223ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch std::string histogram_name("Settings." + histogram_name_prefix + source_name); 224ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch callback.Run(histogram_name, pref->GetValue()); 225ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch}; 226ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 227ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::LogBooleanPrefChange(const std::string& histogram_name, 228ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const Value* value) { 229ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch bool boolean_value = false; 230ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!value->GetAsBoolean(&boolean_value)) 231ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return; 232ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::HistogramBase* histogram = base::BooleanHistogram::FactoryGet( 233ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch histogram_name, base::HistogramBase::kUmaTargetedHistogramFlag); 234ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch histogram->Add(boolean_value); 235ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 236ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 237ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::LogIntegerPrefChange(int boundary_value, 238ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& histogram_name, 239ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const Value* value) { 240ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int integer_value = 0; 241ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!value->GetAsInteger(&integer_value)) 242ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return; 243ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::HistogramBase* histogram = base::LinearHistogram::FactoryGet( 244ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch histogram_name, 245ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 1, 246ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch boundary_value, 247ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch boundary_value + 1, 248ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::HistogramBase::kUmaTargetedHistogramFlag); 249ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch histogram->Add(integer_value); 250ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 251ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 252ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid PrefMetricsService::LogListPrefChange( 253ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const LogHistogramValueCallback& item_callback, 254ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string& histogram_name, 255ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const Value* value) { 256ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const ListValue* items = NULL; 257ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!value->GetAsList(&items)) 258ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return; 259ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch for (size_t i = 0; i < items->GetSize(); ++i) { 260ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const Value *item_value = NULL; 261ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (items->Get(i, &item_value)) 262ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch item_callback.Run(histogram_name, item_value); 263ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 264ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 265ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 26658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)void PrefMetricsService::GetDeviceIdCallback(const std::string& device_id) { 26758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) device_id_ = device_id; 26858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // On Aura, this seems to be called twice. 26958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!checked_tracked_prefs_) 27058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) CheckTrackedPreferences(); 27158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 27258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 27358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// To detect changes to Preferences that happen outside of Chrome, we hash 27458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// selected pref values and save them in local state. CheckTrackedPreferences 27558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// compares the saved values to the values observed in the profile's prefs. A 27658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// dictionary of dictionaries in local state holds the hashed values, grouped by 27758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// profile. To make the system more resistant to spoofing, pref values are 27858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// hashed with the pref path and the device id. 27958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)void PrefMetricsService::CheckTrackedPreferences() { 28058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) DCHECK(!checked_tracked_prefs_); 28158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 28258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const base::DictionaryValue* pref_hash_dicts = 28358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) local_state_->GetDictionary(prefs::kProfilePreferenceHashes); 28458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Get the hashed prefs dictionary if it exists. If it doesn't, it will be 28558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // created if we set preference values below. 28658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const base::DictionaryValue* hashed_prefs = NULL; 28758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) pref_hash_dicts->GetDictionary(profile_name_, &hashed_prefs); 28858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (int i = 0; i < tracked_pref_path_count_; ++i) { 28958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Skip prefs that haven't been registered. 29058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!prefs_->FindPreference(tracked_pref_paths_[i])) 29158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) continue; 29258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 29358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) bool changed = false; 29458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const base::Value* value = prefs_->GetUserPrefValue(tracked_pref_paths_[i]); 29558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (value) { 29658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string value_hash = 29758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) GetHashedPrefValue(tracked_pref_paths_[i], value); 29858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string last_hash; 29958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (hashed_prefs && 30058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) hashed_prefs->GetString(tracked_pref_paths_[i], &last_hash)) { 30158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (value_hash != last_hash) { 30258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) changed = true; 30358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Record that the preference changed from its last value. 30458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceChanged", 30558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) i, tracked_pref_path_count_); 30658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UpdateTrackedPreference(tracked_pref_paths_[i]); 30758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 30858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else { 30958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) changed = true; 31058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Record that we haven't tracked this preference yet, or the hash in 31158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // local state was removed. 31258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceInitialized", 31358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) i, tracked_pref_path_count_); 31458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UpdateTrackedPreference(tracked_pref_paths_[i]); 31558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 31658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else { 31758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // There is no preference set. Remove any hashed value from local state 31858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // and if one was present, record that a pref was cleared. 31958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (RemoveTrackedPreference(tracked_pref_paths_[i])) { 32058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) changed = true; 32158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceCleared", 32258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) i, tracked_pref_path_count_); 32358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 32458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 32558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!changed) { 32658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceUnchanged", 32758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) i, tracked_pref_path_count_); 32858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 32958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 33058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 33158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) checked_tracked_prefs_ = true; 33258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 33358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Now that we've checked the incoming preferences, register for change 33458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // notifications, unless this is test code. 33558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // TODO(bbudge) Fix failing browser_tests and so we can remove this test. 33658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Several tests fail when they shutdown before they can write local state. 33758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType) && 33858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) !CommandLine::ForCurrentProcess()->HasSwitch(switches::kChromeFrame)) { 33958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) InitializePrefObservers(); 34058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 34158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 34258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 34358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)void PrefMetricsService::UpdateTrackedPreference(const char* path) { 34458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const base::Value* value = prefs_->GetUserPrefValue(path); 34558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (value) { 34658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) DictionaryPrefUpdate update(local_state_, prefs::kProfilePreferenceHashes); 34758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) update->SetString(GetHashedPrefPath(path), 34858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) GetHashedPrefValue(path, value)); 34958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else { 35058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) RemoveTrackedPreference(path); 35158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 35258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 35358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 35458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)bool PrefMetricsService::RemoveTrackedPreference(const char* path) { 35558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) DictionaryPrefUpdate update(local_state_, prefs::kProfilePreferenceHashes); 35658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return update->Remove(GetHashedPrefPath(path), NULL); 35758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 35858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 35958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)std::string PrefMetricsService::GetHashedPrefPath(const char* path) { 36058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string hash_pref_path(profile_name_); 36158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) hash_pref_path.append("."); 36258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) hash_pref_path.append(path); 36358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return hash_pref_path; 36458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 36558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 36658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)std::string PrefMetricsService::GetHashedPrefValue( 36758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char* path, 36858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const base::Value* value) { 36958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) DCHECK(value); 37058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 37158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Dictionary values may contain empty lists and sub-dictionaries. Create 37258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // a deep copy with those stripped to make the hash more stable. 37358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) scoped_ptr<DictionaryValue> dict_value; 37458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (value->IsType(Value::TYPE_DICTIONARY)) { 37558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) dict_value.reset(static_cast<const DictionaryValue*>(value) 37658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ->DeepCopyWithoutEmptyChildren()); 37758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) value = dict_value.get(); 37858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 37958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 38058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string string_to_hash(device_id_); 38158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) string_to_hash.append(path); 38258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) JSONStringValueSerializer serializer(&string_to_hash); 38358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) serializer.Serialize(*value); 38458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 38558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) crypto::HMAC hmac(crypto::HMAC::SHA256); 38658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) unsigned char digest[kSHA256DigestSize]; 38758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!hmac.Init(pref_hash_seed_) || 38858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) !hmac.Sign(string_to_hash, digest, kSHA256DigestSize)) { 38958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) NOTREACHED(); 39058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return std::string(); 39158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 39258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 39358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return base::HexEncode(digest, kSHA256DigestSize); 39458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 39558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 39658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)void PrefMetricsService::InitializePrefObservers() { 39758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) pref_registrar_.Init(prefs_); 39858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (int i = 0; i < tracked_pref_path_count_; ++i) { 39958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Skip prefs that haven't been registered. 40058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!prefs_->FindPreference(tracked_pref_paths_[i])) 40158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) continue; 40258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 40358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) pref_registrar_.Add( 40458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_paths_[i], 40558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) base::Bind(&PrefMetricsService::UpdateTrackedPreference, 40658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) weak_factory_.GetWeakPtr(), 40758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) tracked_pref_paths_[i])); 40858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 40958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 41058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 411bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch// static 412bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::Factory* PrefMetricsService::Factory::GetInstance() { 413bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return Singleton<PrefMetricsService::Factory>::get(); 414bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 415bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 416bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch// static 417bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService* PrefMetricsService::Factory::GetForProfile( 418bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch Profile* profile) { 419bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return static_cast<PrefMetricsService*>( 420bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch GetInstance()->GetServiceForBrowserContext(profile, true)); 421bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 422bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 423bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::Factory::Factory() 424bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch : BrowserContextKeyedServiceFactory( 425bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch "PrefMetricsService", 426bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch BrowserContextDependencyManager::GetInstance()) { 427bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 428bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 429bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::Factory::~Factory() { 430bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 431bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 432bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochBrowserContextKeyedService* 433bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben MurdochPrefMetricsService::Factory::BuildServiceInstanceFor( 434bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch content::BrowserContext* profile) const { 435bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return new PrefMetricsService(static_cast<Profile*>(profile)); 436bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 437bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 438bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdochbool PrefMetricsService::Factory::ServiceIsCreatedWithBrowserContext() const { 439bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return true; 440bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 441bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 442bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdochbool PrefMetricsService::Factory::ServiceIsNULLWhileTesting() const { 443bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return false; 444bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 445bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 446bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdochcontent::BrowserContext* PrefMetricsService::Factory::GetBrowserContextToUse( 447bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch content::BrowserContext* context) const { 448bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch return chrome::GetBrowserContextRedirectedInIncognito(context); 449bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch} 450