chrome/browser/chrome_browser_main.cc

   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 #include "chrome/browser/chrome_browser_main.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/at_exit.h"
  12 #include "base/bind.h"
  13 #include "base/command_line.h"
  14 #include "base/debug/crash_logging.h"
  15 #include "base/debug/debugger.h"
  16 #include "base/files/file_path.h"
  17 #include "base/files/file_util.h"
  18 #include "base/metrics/field_trial.h"
  19 #include "base/metrics/histogram_macros.h"
  20 #include "base/path_service.h"
  21 #include "base/prefs/json_pref_store.h"
  22 #include "base/prefs/pref_registry_simple.h"
  23 #include "base/prefs/pref_service.h"
  24 #include "base/prefs/pref_value_store.h"
  25 #include "base/prefs/scoped_user_pref_update.h"
  26 #include "base/process/process_info.h"
  27 #include "base/profiler/scoped_profile.h"
  28 #include "base/profiler/scoped_tracker.h"
  29 #include "base/run_loop.h"
  30 #include "base/strings/string_number_conversions.h"
  31 #include "base/strings/string_piece.h"
  32 #include "base/strings/string_split.h"
  33 #include "base/strings/sys_string_conversions.h"
  34 #include "base/strings/utf_string_conversions.h"
  35 #include "base/sys_info.h"
  36 #include "base/threading/platform_thread.h"
  37 #include "base/time/default_tick_clock.h"
  38 #include "base/time/time.h"
  39 #include "base/trace_event/trace_event.h"
  40 #include "base/values.h"
  41 #include "build/build_config.h"
  42 #include "cc/base/switches.h"
  43 #include "chrome/browser/about_flags.h"
  44 #include "chrome/browser/after_startup_task_utils.h"
  45 #include "chrome/browser/browser_process.h"
  46 #include "chrome/browser/browser_process_impl.h"
  47 #include "chrome/browser/browser_process_platform_part.h"
  48 #include "chrome/browser/browser_shutdown.h"
  49 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  50 #include "chrome/browser/component_updater/cld_component_installer.h"
  51 #include "chrome/browser/component_updater/ev_whitelist_component_installer.h"
  52 #include "chrome/browser/component_updater/flash_component_installer.h"
  53 #include "chrome/browser/component_updater/recovery_component_installer.h"
  54 #include "chrome/browser/component_updater/supervised_user_whitelist_installer.h"
  55 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
  56 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
  57 #include "chrome/browser/defaults.h"
  58 #include "chrome/browser/first_run/first_run.h"
  59 #include "chrome/browser/first_run/upgrade_util.h"
  60 #include "chrome/browser/google/google_search_counter.h"
  61 #include "chrome/browser/gpu/gl_string_manager.h"
  62 #include "chrome/browser/gpu/three_d_api_observer.h"
  63 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  64 #include "chrome/browser/memory/oom_priority_manager.h"
  65 #include "chrome/browser/metrics/field_trial_synchronizer.h"
  66 #include "chrome/browser/metrics/metrics_services_manager.h"
  67 #include "chrome/browser/metrics/thread_watcher.h"
  68 #include "chrome/browser/metrics/variations/variations_service.h"
  69 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
  70 #include "chrome/browser/net/chrome_net_log.h"
  71 #include "chrome/browser/net/crl_set_fetcher.h"
  72 #include "chrome/browser/performance_monitor/performance_monitor.h"
  73 #include "chrome/browser/plugins/plugin_prefs.h"
  74 #include "chrome/browser/power/process_power_collector.h"
  75 #include "chrome/browser/pref_service_flags_storage.h"
  76 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  77 #include "chrome/browser/prefs/command_line_pref_store.h"
  78 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  79 #include "chrome/browser/prefs/pref_metrics_service.h"
  80 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
  81 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
  82 #include "chrome/browser/process_singleton.h"
  83 #include "chrome/browser/profiles/profile.h"
  84 #include "chrome/browser/profiles/profile_manager.h"
  85 #include "chrome/browser/profiles/profiles_state.h"
  86 #include "chrome/browser/shell_integration.h"
  87 #include "chrome/browser/tracing/navigation_tracing.h"
  88 #include "chrome/browser/translate/translate_service.h"
  89 #include "chrome/browser/ui/app_list/app_list_service.h"
  90 #include "chrome/browser/ui/browser.h"
  91 #include "chrome/browser/ui/browser_finder.h"
  92 #include "chrome/browser/ui/host_desktop.h"
  93 #include "chrome/browser/ui/startup/bad_flags_prompt.h"
  94 #include "chrome/browser/ui/startup/default_browser_prompt.h"
  95 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  96 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
  97 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
  98 #include "chrome/common/channel_info.h"
  99 #include "chrome/common/chrome_constants.h"
 100 #include "chrome/common/chrome_paths.h"
 101 #include "chrome/common/chrome_result_codes.h"
 102 #include "chrome/common/chrome_switches.h"
 103 #include "chrome/common/crash_keys.h"
 104 #include "chrome/common/env_vars.h"
 105 #include "chrome/common/logging_chrome.h"
 106 #include "chrome/common/net/net_resource_provider.h"
 107 #include "chrome/common/pref_names.h"
 108 #include "chrome/common/profiling.h"
 109 #include "chrome/common/variations/variations_util.h"
 110 #include "chrome/grit/generated_resources.h"
 111 #include "chrome/installer/util/google_update_settings.h"
 112 #include "components/component_updater/component_updater_service.h"
 113 #include "components/device_event_log/device_event_log.h"
 114 #include "components/google/core/browser/google_util.h"
 115 #include "components/language_usage_metrics/language_usage_metrics.h"
 116 #include "components/metrics/call_stack_profile_metrics_provider.h"
 117 #include "components/metrics/metrics_service.h"
 118 #include "components/metrics/profiler/tracking_synchronizer.h"
 119 #include "components/nacl/browser/nacl_browser.h"
 120 #include "components/rappor/rappor_service.h"
 121 #include "components/signin/core/common/profile_management_switches.h"
 122 #include "components/startup_metric_utils/startup_metric_utils.h"
 123 #include "components/translate/content/browser/browser_cld_utils.h"
 124 #include "components/translate/content/common/cld_data_source.h"
 125 #include "components/translate/core/browser/translate_download_manager.h"
 126 #include "components/variations/net/variations_http_header_provider.h"
 127 #include "components/variations/variations_associated_data.h"
 128 #include "components/version_info/version_info.h"
 129 #include "content/public/browser/browser_thread.h"
 130 #include "content/public/browser/notification_observer.h"
 131 #include "content/public/browser/notification_registrar.h"
 132 #include "content/public/browser/notification_service.h"
 133 #include "content/public/browser/notification_types.h"
 134 #include "content/public/browser/power_usage_monitor.h"
 135 #include "content/public/browser/site_instance.h"
 136 #include "content/public/common/content_client.h"
 137 #include "content/public/common/content_switches.h"
 138 #include "content/public/common/main_function_params.h"
 139 #include "grit/platform_locale_settings.h"
 140 #include "media/audio/audio_manager.h"
 141 #include "net/base/net_module.h"
 142 #include "net/cookies/cookie_monster.h"
 143 #include "net/http/http_network_layer.h"
 144 #include "net/http/http_stream_factory.h"
 145 #include "net/url_request/url_request.h"
 146 #include "ui/base/l10n/l10n_util.h"
 147 #include "ui/base/layout.h"
 148 #include "ui/base/resource/resource_bundle.h"
 149 #include "ui/strings/grit/app_locale_settings.h"
 150
 151 #if defined(OS_ANDROID)
 152 #include "chrome/browser/android/dev_tools_discovery_provider_android.h"
 153 #include "chrome/browser/metrics/thread_watcher_android.h"
 154 #include "ui/base/resource/resource_bundle_android.h"
 155 #else
 156 #include "chrome/browser/devtools/chrome_devtools_discovery_provider.h"
 157 #include "chrome/browser/feedback/feedback_profile_observer.h"
 158 #endif  // defined(OS_ANDROID)
 159
 160 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 161 #include "chrome/browser/first_run/upgrade_util_linux.h"
 162 #include "chrome/browser/sxs_linux.h"
 163 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
 164
 165 #if defined(OS_CHROMEOS)
 166 #include "chrome/browser/chromeos/settings/cros_settings.h"
 167 #include "chromeos/chromeos_switches.h"
 168 #include "chromeos/settings/cros_settings_names.h"
 169 #endif  // defined(OS_CHROMEOS)
 170
 171 // TODO(port): several win-only methods have been pulled out of this, but
 172 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 173 // other platforms. For now, it's just a stub. This is a serious work in
 174 // progress and should not be taken as an indication of a real refactoring.
 175
 176 #if defined(OS_WIN)
 177 #include "base/environment.h"  // For PreRead experiment.
 178 #include "base/win/windows_version.h"
 179 #include "chrome/browser/browser_util_win.h"
 180 #include "chrome/browser/chrome_browser_main_win.h"
 181 #include "chrome/browser/chrome_select_file_dialog_factory_win.h"
 182 #include "chrome/browser/component_updater/caps_installer_win.h"
 183 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 184 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 185 #include "chrome/browser/first_run/upgrade_util_win.h"
 186 #include "chrome/browser/ui/network_profile_bubble.h"
 187 #include "chrome/installer/util/helper.h"
 188 #include "chrome/installer/util/install_util.h"
 189 #include "chrome/installer/util/shell_util.h"
 190 #include "components/browser_watcher/exit_funnel_win.h"
 191 #include "net/base/net_util.h"
 192 #include "ui/base/l10n/l10n_util_win.h"
 193 #include "ui/gfx/win/dpi.h"
 194 #include "ui/shell_dialogs/select_file_dialog.h"
 195 #endif  // defined(OS_WIN)
 196
 197 #if defined(OS_MACOSX)
 198 #include <Security/Security.h>
 199
 200 #include "base/mac/scoped_nsautorelease_pool.h"
 201 #include "chrome/browser/mac/keystone_glue.h"
 202 #endif  // defined(OS_MACOSX)
 203
 204 #if !defined(OS_IOS)
 205 #include "chrome/browser/ui/app_modal/chrome_javascript_native_dialog_factory.h"
 206 #endif  // !defined(OS_IOS)
 207
 208 #if !defined(DISABLE_NACL)
 209 #include "chrome/browser/component_updater/pnacl_component_installer.h"
 210 #include "components/nacl/browser/nacl_process_host.h"
 211 #endif  // !defined(DISABLE_NACL)
 212
 213 #if defined(ENABLE_EXTENSIONS)
 214 #include "chrome/browser/extensions/startup_helper.h"
 215 #include "extensions/browser/extension_protocols.h"
 216 #include "extensions/common/features/feature_provider.h"
 217 #include "extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
 218 #endif  // defined(ENABLE_EXTENSIONS)
 219
 220 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 221 #include "printing/printed_document.h"
 222 #endif  // defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 223
 224 #if defined(ENABLE_RLZ)
 225 #include "chrome/browser/rlz/chrome_rlz_tracker_delegate.h"
 226 #include "components/rlz/rlz_tracker.h"
 227 #endif  // defined(ENABLE_RLZ)
 228
 229 #if defined(ENABLE_WEBRTC)
 230 #include "chrome/browser/media/webrtc_log_util.h"
 231 #endif  // defined(ENABLE_WEBRTC)
 232
 233 #if defined(USE_AURA)
 234 #include "ui/aura/env.h"
 235 #endif  // defined(USE_AURA)
 236
 237 using content::BrowserThread;
 238
 239 namespace {
 240
 241 // This function provides some ways to test crash and assertion handling
 242 // behavior of the program.
 243 void HandleTestParameters(const base::CommandLine& command_line) {
 244   // This parameter causes a null pointer crash (crash reporter trigger).
 245   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
 246     int* bad_pointer = NULL;
 247     *bad_pointer = 0;
 248   }
 249 }
 250
 251 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 252 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
 253                         const std::vector<GURL>& new_tabs) {
 254   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
 255        it != new_tabs.end(); ++it) {
 256     if (it->is_valid())
 257       browser_creator->AddFirstRunTab(*it);
 258   }
 259 }
 260 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 261
 262 // Returns the new local state object, guaranteed non-NULL.
 263 // |local_state_task_runner| must be a shutdown-blocking task runner.
 264 PrefService* InitializeLocalState(
 265     base::SequencedTaskRunner* local_state_task_runner,
 266     const base::CommandLine& parsed_command_line) {
 267   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
 268
 269   // Load local state.  This includes the application locale so we know which
 270   // locale dll to load.  This also causes local state prefs to be registered.
 271   PrefService* local_state = g_browser_process->local_state();
 272   DCHECK(local_state);
 273
 274 #if defined(OS_WIN)
 275   if (first_run::IsChromeFirstRun()) {
 276     // During first run we read the google_update registry key to find what
 277     // language the user selected when downloading the installer. This
 278     // becomes our default language in the prefs.
 279     // Other platforms obey the system locale.
 280     base::string16 install_lang;
 281     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
 282       local_state->SetString(prefs::kApplicationLocale,
 283                              base::UTF16ToASCII(install_lang));
 284     }
 285   }
 286 #endif  // defined(OS_WIN)
 287
 288   // If the local state file for the current profile doesn't exist and the
 289   // parent profile command line flag is present, then we should inherit some
 290   // local state from the parent profile.
 291   // Checking that the local state file for the current profile doesn't exist
 292   // is the most robust way to determine whether we need to inherit or not
 293   // since the parent profile command line flag can be present even when the
 294   // current profile is not a new one, and in that case we do not want to
 295   // inherit and reset the user's setting.
 296   //
 297   // TODO(mnissler): We should probably just instantiate a
 298   // JSONPrefStore here instead of an entire PrefService. Once this is
 299   // addressed, the call to browser_prefs::RegisterLocalState can move
 300   // to chrome_prefs::CreateLocalState.
 301   if (parsed_command_line.HasSwitch(switches::kParentProfile)) {
 302     base::FilePath local_state_path;
 303     PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
 304     bool local_state_file_exists = base::PathExists(local_state_path);
 305     if (!local_state_file_exists) {
 306       base::FilePath parent_profile =
 307           parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
 308       scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
 309       scoped_ptr<PrefService> parent_local_state(
 310           chrome_prefs::CreateLocalState(
 311               parent_profile,
 312               local_state_task_runner,
 313               g_browser_process->policy_service(),
 314               registry,
 315               false));
 316       registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 317       // Right now, we only inherit the locale setting from the parent profile.
 318       local_state->SetString(
 319           prefs::kApplicationLocale,
 320           parent_local_state->GetString(prefs::kApplicationLocale));
 321     }
 322   }
 323
 324 #if defined(OS_CHROMEOS)
 325   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
 326     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
 327     // Ensure that we start with owner's locale.
 328     if (!owner_locale.empty() &&
 329         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
 330         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
 331       local_state->SetString(prefs::kApplicationLocale, owner_locale);
 332     }
 333   }
 334 #endif  // defined(OS_CHROMEOS)
 335
 336   return local_state;
 337 }
 338
 339 // Initializes the primary profile, possibly doing some user prompting to pick
 340 // a fallback profile. Returns the newly created profile, or NULL if startup
 341 // should not continue.
 342 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
 343                               const base::FilePath& user_data_dir,
 344                               const base::CommandLine& parsed_command_line) {
 345   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
 346   TRACK_SCOPED_REGION(
 347       "Startup", "ChromeBrowserMainParts::CreatePrimaryProfile");
 348
 349   base::Time start = base::Time::Now();
 350   if (profiles::IsMultipleProfilesEnabled() &&
 351       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
 352     profiles::SetLastUsedProfile(
 353         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
 354     // Clear kProfilesLastActive since the user only wants to launch a specific
 355     // profile.
 356     ListPrefUpdate update(g_browser_process->local_state(),
 357                           prefs::kProfilesLastActive);
 358     base::ListValue* profile_list = update.Get();
 359     profile_list->Clear();
 360   }
 361
 362   Profile* profile = NULL;
 363 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 364   // On ChromeOS and Android the ProfileManager will use the same path as the
 365   // one we got passed. GetActiveUserProfile will therefore use the correct path
 366   // automatically.
 367   DCHECK_EQ(user_data_dir.value(),
 368             g_browser_process->profile_manager()->user_data_dir().value());
 369   profile = ProfileManager::GetActiveUserProfile();
 370 #else
 371   base::FilePath profile_path =
 372       GetStartupProfilePath(user_data_dir, parsed_command_line);
 373
 374   // Without NewAvatarMenu, replace guest with any existing profile.
 375   if (!switches::IsNewAvatarMenu() &&
 376       profile_path == ProfileManager::GetGuestProfilePath()) {
 377     profile_path = g_browser_process->profile_manager()->GetProfileInfoCache().
 378         GetPathOfProfileAtIndex(0);
 379   }
 380   profile = g_browser_process->profile_manager()->GetProfile(
 381       profile_path);
 382
 383   // If we're using the --new-profile-management flag and this profile is
 384   // signed out, then we should show the user manager instead. By switching
 385   // the active profile to the guest profile we ensure that no
 386   // browser windows will be opened for the guest profile.
 387   if (switches::IsNewProfileManagement() &&
 388       profile &&
 389       !profile->IsGuestSession()) {
 390     ProfileInfoCache& cache =
 391         g_browser_process->profile_manager()->GetProfileInfoCache();
 392     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
 393
 394     if (profile_index != std::string::npos &&
 395         cache.ProfileIsSigninRequiredAtIndex(profile_index)) {
 396       profile = g_browser_process->profile_manager()->GetProfile(
 397           ProfileManager::GetGuestProfilePath());
 398     }
 399   }
 400 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID)
 401   if (profile) {
 402     UMA_HISTOGRAM_LONG_TIMES(
 403         "Startup.CreateFirstProfile", base::Time::Now() - start);
 404     return profile;
 405   }
 406
 407 #if !defined(OS_WIN)
 408   // TODO(port): fix this.  See comments near the definition of
 409   // user_data_dir.  It is better to CHECK-fail here than it is to
 410   // silently exit because of missing code in the above test.
 411   CHECK(profile) << "Cannot get default profile.";
 412 #endif  // !defined(OS_WIN)
 413
 414   return NULL;
 415 }
 416
 417 #if defined(OS_MACOSX)
 418 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
 419                           SecKeychainCallbackInfo* info, void* context) {
 420   return noErr;
 421 }
 422 #endif  // defined(OS_MACOSX)
 423
 424 void RegisterComponentsForUpdate() {
 425   component_updater::ComponentUpdateService* cus =
 426       g_browser_process->component_updater();
 427
 428   // Registration can be before or after cus->Start() so it is ok to post
 429   // a task to the UI thread to do registration once you done the necessary
 430   // file IO to know you existing component version.
 431 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 432   RegisterRecoveryComponent(cus, g_browser_process->local_state());
 433   RegisterPepperFlashComponent(cus);
 434   RegisterSwiftShaderComponent(cus);
 435   RegisterWidevineCdmComponent(cus);
 436 #endif  // !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 437
 438 #if !defined(DISABLE_NACL) && !defined(OS_ANDROID)
 439 #if defined(OS_CHROMEOS)
 440   // PNaCl on Chrome OS is on rootfs and there is no need to download it. But
 441   // Chrome4ChromeOS on Linux doesn't contain PNaCl so enable component
 442   // installer when running on Linux. See crbug.com/422121 for more details.
 443   if (!base::SysInfo::IsRunningOnChromeOS())
 444 #endif  // defined(OS_CHROMEOS)
 445     g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
 446 #endif  // !defined(DISABLE_NACL) && !defined(OS_ANDROID)
 447
 448   // Registration of the CLD Component is a no-op unless the CLD data source has
 449   // been configured to be the "Component" data source.
 450   RegisterCldComponent(cus);
 451
 452   component_updater::SupervisedUserWhitelistInstaller* whitelist_installer =
 453       g_browser_process->supervised_user_whitelist_installer();
 454   whitelist_installer->RegisterComponents();
 455
 456   base::FilePath path;
 457   if (PathService::Get(chrome::DIR_USER_DATA, &path)) {
 458 #if defined(OS_ANDROID)
 459     // The CRLSet component was enabled for some releases. This code attempts to
 460     // delete it from the local disk of those how may have downloaded it.
 461     g_browser_process->crl_set_fetcher()->DeleteFromDisk(path);
 462 #elif !defined(OS_CHROMEOS)
 463     // CRLSetFetcher attempts to load a CRL set from either the local disk or
 464     // network.
 465     // For Chrome OS this registration is delayed until user login.
 466     g_browser_process->crl_set_fetcher()->StartInitialLoad(cus, path);
 467     // Registration of the EV Whitelist component here is not necessary for:
 468     // 1. Android: Because it currently does not have the EV indicator.
 469     // 2. Chrome OS: On Chrome OS this registration is delayed until user login.
 470     RegisterEVWhitelistComponent(cus, path);
 471 #endif  // defined(OS_ANDROID)
 472   }
 473
 474 #if defined(OS_WIN)
 475 #if defined(GOOGLE_CHROME_BUILD)
 476   RegisterSwReporterComponent(cus);
 477 #endif  // defined(GOOGLE_CHROME_BUILD)
 478   RegisterCAPSComponent(cus);
 479 #endif  // defined(OS_WIN)
 480 }
 481
 482 #if !defined(OS_ANDROID)
 483 bool ProcessSingletonNotificationCallback(
 484     const base::CommandLine& command_line,
 485     const base::FilePath& current_directory) {
 486   // Drop the request if the browser process is already in shutdown path.
 487   if (!g_browser_process || g_browser_process->IsShuttingDown()) {
 488 #if defined(OS_WIN)
 489     browser_watcher::ExitFunnel::RecordSingleEvent(
 490         chrome::kBrowserExitCodesRegistryPath,
 491         L"ProcessSingletonIsShuttingDown");
 492 #endif  // defined(OS_WIN)
 493
 494     return false;
 495   }
 496
 497   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
 498     std::string start_time_string =
 499         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
 500     int64 remote_start_time;
 501     if (base::StringToInt64(start_time_string, &remote_start_time)) {
 502       base::TimeDelta elapsed =
 503           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
 504       if (command_line.HasSwitch(switches::kFastStart)) {
 505         UMA_HISTOGRAM_LONG_TIMES(
 506             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
 507       } else {
 508         UMA_HISTOGRAM_LONG_TIMES(
 509             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
 510       }
 511     }
 512   }
 513
 514   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
 515       command_line);
 516
 517   base::FilePath user_data_dir =
 518       g_browser_process->profile_manager()->user_data_dir();
 519   base::FilePath startup_profile_dir =
 520       GetStartupProfilePath(user_data_dir, command_line);
 521
 522   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
 523       command_line, current_directory, startup_profile_dir);
 524   return true;
 525 }
 526 #endif  // !defined(OS_ANDROID)
 527
 528 void LaunchDevToolsHandlerIfNeeded(const base::CommandLine& command_line) {
 529   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
 530     std::string port_str =
 531         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
 532     int port;
 533     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
 534       g_browser_process->CreateDevToolsHttpProtocolHandler(
 535           chrome::HOST_DESKTOP_TYPE_NATIVE,
 536           "127.0.0.1",
 537           static_cast<uint16>(port));
 538     } else {
 539       DLOG(WARNING) << "Invalid http debugger port number " << port;
 540     }
 541   }
 542 }
 543
 544 }  // namespace
 545
 546 namespace chrome_browser {
 547
 548 // This error message is not localized because we failed to load the
 549 // localization data files.
 550 #if defined(OS_WIN)
 551 const char kMissingLocaleDataTitle[] = "Missing File Error";
 552 #endif  // defined(OS_WIN)
 553
 554 #if defined(OS_WIN)
 555 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
 556 const char kMissingLocaleDataMessage[] =
 557     "Unable to find locale data files. Please reinstall.";
 558 #endif  // defined(OS_WIN)
 559
 560 }  // namespace chrome_browser
 561
 562 // BrowserMainParts ------------------------------------------------------------
 563
 564 ChromeBrowserMainParts::ChromeBrowserMainParts(
 565     const content::MainFunctionParams& parameters)
 566     : parameters_(parameters),
 567       parsed_command_line_(parameters.command_line),
 568       result_code_(content::RESULT_CODE_NORMAL_EXIT),
 569       startup_watcher_(new StartupTimeBomb()),
 570       shutdown_watcher_(new ShutdownWatcherHelper()),
 571       browser_field_trials_(parameters.command_line),
 572       profile_(NULL),
 573       run_message_loop_(true),
 574       notify_result_(ProcessSingleton::PROCESS_NONE),
 575       local_state_(NULL),
 576       restart_last_session_(false) {
 577   // If we're running tests (ui_task is non-null).
 578   if (parameters.ui_task)
 579     browser_defaults::enable_help_app = false;
 580
 581   // Chrome disallows cookies by default. All code paths that want to use
 582   // cookies need to go through one of Chrome's URLRequestContexts which have
 583   // a ChromeNetworkDelegate attached that selectively allows cookies again.
 584   net::URLRequest::SetDefaultCookiePolicyToBlock();
 585 }
 586
 587 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
 588   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
 589     delete chrome_extra_parts_[i];
 590   chrome_extra_parts_.clear();
 591 }
 592
 593 // This will be called after the command-line has been mutated by about:flags
 594 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
 595   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
 596   // Must initialize metrics after labs have been converted into switches,
 597   // but before field trials are set up (so that client ID is available for
 598   // one-time randomized field trials).
 599
 600   // Initialize FieldTrialList to support FieldTrials that use one-time
 601   // randomization.
 602   metrics::MetricsService* metrics = browser_process_->metrics_service();
 603   field_trial_list_.reset(
 604       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
 605
 606   const base::CommandLine* command_line =
 607       base::CommandLine::ForCurrentProcess();
 608   if (command_line->HasSwitch(switches::kEnableBenchmarking) ||
 609       command_line->HasSwitch(cc::switches::kEnableGpuBenchmarking)) {
 610     base::FieldTrial::EnableBenchmarking();
 611   }
 612
 613   if (command_line->HasSwitch(switches::kForceFieldTrialParams)) {
 614     bool result = chrome_variations::AssociateParamsFromString(
 615         command_line->GetSwitchValueASCII(switches::kForceFieldTrialParams));
 616     CHECK(result) << "Invalid --" << switches::kForceFieldTrialParams
 617                   << " list specified.";
 618   }
 619
 620   // Ensure any field trials specified on the command line are initialized.
 621   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
 622     std::set<std::string> unforceable_field_trials;
 623 #if defined(OFFICIAL_BUILD)
 624     unforceable_field_trials.insert("SettingsEnforcement");
 625 #endif  // defined(OFFICIAL_BUILD)
 626
 627     // Create field trials without activating them, so that this behaves in a
 628     // consistent manner with field trials created from the server.
 629     bool result = base::FieldTrialList::CreateTrialsFromString(
 630         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
 631         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 632         unforceable_field_trials);
 633     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
 634                   << " list specified.";
 635   }
 636
 637 #if defined(FIELDTRIAL_TESTING_ENABLED)
 638   if (!command_line->HasSwitch(switches::kDisableFieldTrialTestingConfig) &&
 639       !command_line->HasSwitch(switches::kForceFieldTrials) &&
 640       !command_line->HasSwitch(switches::kVariationsServerURL))
 641     chrome_variations::AssociateDefaultFieldTrialConfig();
 642 #endif  // defined(FIELDTRIAL_TESTING_ENABLED)
 643
 644   if (command_line->HasSwitch(switches::kForceVariationIds)) {
 645     // Create default variation ids which will always be included in the
 646     // X-Client-Data request header.
 647     variations::VariationsHttpHeaderProvider* provider =
 648         variations::VariationsHttpHeaderProvider::GetInstance();
 649     bool result = provider->SetDefaultVariationIds(
 650         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
 651     CHECK(result) << "Invalid --" << switches::kForceVariationIds
 652                   << " list specified.";
 653     metrics->AddSyntheticTrialObserver(provider);
 654   }
 655   chrome_variations::VariationsService* variations_service =
 656       browser_process_->variations_service();
 657   if (variations_service)
 658     variations_service->CreateTrialsFromSeed();
 659
 660   // This must be called after |local_state_| is initialized.
 661   browser_field_trials_.SetupFieldTrials();
 662
 663   // Enable Navigation Tracing only if a trace upload url is specified.
 664   if (command_line->HasSwitch(switches::kEnableNavigationTracing) &&
 665       command_line->HasSwitch(switches::kTraceUploadURL)) {
 666     tracing::SetupNavigationTracing();
 667   }
 668
 669   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
 670   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
 671   // Even though base::Bind does AddRef and Release, the object will not be
 672   // deleted after the Task is executed.
 673   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 674
 675   // Now that field trials have been created, initializes metrics recording.
 676   metrics->InitializeMetricsRecordingState();
 677
 678   const version_info::Channel channel = chrome::GetChannel();
 679
 680   // TODO(dalecurtis): Remove these checks and enable for all channels once we
 681   // track down the root causes of crbug.com/422522 and crbug.com/478932.
 682   if (channel == version_info::Channel::UNKNOWN ||
 683       channel == version_info::Channel::CANARY ||
 684       channel == version_info::Channel::DEV) {
 685     media::AudioManager::EnableHangMonitor();
 686   }
 687
 688   // Enable profiler instrumentation depending on the channel.
 689   switch (channel) {
 690     case version_info::Channel::UNKNOWN:
 691     case version_info::Channel::CANARY:
 692       tracked_objects::ScopedTracker::Enable();
 693       break;
 694
 695     case version_info::Channel::DEV:
 696     case version_info::Channel::BETA:
 697     case version_info::Channel::STABLE:
 698       // Don't enable instrumentation.
 699       break;
 700   }
 701 }
 702
 703 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 704
 705 void ChromeBrowserMainParts::StartMetricsRecording() {
 706   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
 707
 708   g_browser_process->metrics_service()->CheckForClonedInstall(
 709       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
 710
 711   g_browser_process->GetMetricsServicesManager()->UpdateUploadPermissions(true);
 712 }
 713
 714 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
 715   // Don't record any metrics if UI was displayed before this point e.g.
 716   // warning dialogs.
 717   if (startup_metric_utils::WasNonBrowserUIDisplayed())
 718     return;
 719
 720 #if defined(OS_ANDROID)
 721   // On Android the first run is handled in Java code, and the C++ side of
 722   // Chrome doesn't know if this is the first run. This will cause some
 723   // inaccuracy in the UMA statistics, but this should be minor (first runs are
 724   // rare).
 725   bool is_first_run = false;
 726 #else
 727   bool is_first_run = first_run::IsChromeFirstRun();
 728 #endif  // defined(OS_ANDROID)
 729
 730 // CurrentProcessInfo::CreationTime() is currently only implemented on some
 731 // platforms.
 732 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 733   const base::Time process_creation_time =
 734       base::CurrentProcessInfo::CreationTime();
 735
 736   if (!is_first_run && !process_creation_time.is_null()) {
 737     base::TimeDelta delay = base::Time::Now() - process_creation_time;
 738     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserMessageLoopStartTime", delay);
 739   }
 740 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 741
 742   // Record collected startup metrics.
 743   startup_metric_utils::OnBrowserStartupComplete(is_first_run);
 744 }
 745
 746 // -----------------------------------------------------------------------------
 747 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 748
 749 #if defined(OS_WIN)
 750 #define DLLEXPORT __declspec(dllexport)
 751
 752 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
 753 extern "C" {
 754 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 755 }
 756
 757 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
 758   // Need an instance of AtExitManager to handle singleton creations and
 759   // deletions.  We need this new instance because, the old instance created
 760   // in ChromeMain() got destructed when the function returned.
 761   base::AtExitManager exit_manager;
 762   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 763 }
 764 #endif
 765
 766 // content::BrowserMainParts implementation ------------------------------------
 767
 768 void ChromeBrowserMainParts::PreEarlyInitialization() {
 769   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
 770   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 771     chrome_extra_parts_[i]->PreEarlyInitialization();
 772 }
 773
 774 void ChromeBrowserMainParts::PostEarlyInitialization() {
 775   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
 776   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 777     chrome_extra_parts_[i]->PostEarlyInitialization();
 778 }
 779
 780 void ChromeBrowserMainParts::ToolkitInitialized() {
 781   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
 782   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 783     chrome_extra_parts_[i]->ToolkitInitialized();
 784 }
 785
 786 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
 787   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
 788
 789   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 790     chrome_extra_parts_[i]->PreMainMessageLoopStart();
 791 }
 792
 793 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
 794   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 795
 796   // device_event_log must be initialized after the message loop. Calls to
 797   // {DEVICE}_LOG prior to here will only be logged with VLOG. Some
 798   // platforms (e.g. chromeos) may have already initialized this.
 799   if (!device_event_log::IsInitialized())
 800     device_event_log::Initialize(0 /* default max entries */);
 801
 802   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 803     chrome_extra_parts_[i]->PostMainMessageLoopStart();
 804 }
 805
 806 int ChromeBrowserMainParts::PreCreateThreads() {
 807   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
 808   result_code_ = PreCreateThreadsImpl();
 809
 810   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 811 #if !defined(OS_ANDROID)
 812     // These members must be initialized before exiting this function normally.
 813     DCHECK(master_prefs_.get());
 814     DCHECK(browser_creator_.get());
 815 #endif  // !defined(OS_ANDROID)
 816     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 817       chrome_extra_parts_[i]->PreCreateThreads();
 818   }
 819
 820   return result_code_;
 821 }
 822
 823 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
 824   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
 825   run_message_loop_ = false;
 826 #if !defined(OS_ANDROID)
 827   chrome::MaybeShowInvalidUserDataDirWarningDialog();
 828 #endif  // !defined(OS_ANDROID)
 829   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
 830     return chrome::RESULT_CODE_MISSING_DATA;
 831
 832   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
 833   MediaCaptureDevicesDispatcher::GetInstance();
 834
 835   // Android's first run is done in Java instead of native.
 836 #if !defined(OS_ANDROID)
 837   process_singleton_.reset(new ChromeProcessSingleton(
 838       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
 839
 840   // Cache first run state early.
 841   first_run::IsChromeFirstRun();
 842 #endif  // !defined(OS_ANDROID)
 843
 844   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
 845       JsonPrefStore::GetTaskRunnerForFile(
 846           base::FilePath(chrome::kLocalStorePoolName),
 847           BrowserThread::GetBlockingPool());
 848
 849   {
 850     TRACE_EVENT0("startup",
 851       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
 852     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
 853                                                   parsed_command_line()));
 854   }
 855
 856   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
 857     TRACE_EVENT0("startup",
 858         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
 859     // User wants to override default tracking status.
 860     std::string flag =
 861       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
 862     // Default to basic profiling (no parent child support).
 863     tracked_objects::ThreadData::Status status =
 864           tracked_objects::ThreadData::PROFILING_ACTIVE;
 865     if (flag.compare("0") != 0)
 866       status = tracked_objects::ThreadData::DEACTIVATED;
 867     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
 868   }
 869
 870   local_state_ = InitializeLocalState(
 871       local_state_task_runner.get(), parsed_command_line());
 872
 873 #if !defined(OS_ANDROID)
 874   // These members must be initialized before returning from this function.
 875   master_prefs_.reset(new first_run::MasterPrefs);
 876   // Android doesn't use StartupBrowserCreator.
 877   browser_creator_.reset(new StartupBrowserCreator);
 878   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
 879   chrome::UMABrowsingActivityObserver::Init();
 880 #endif  // !defined(OS_ANDROID)
 881
 882 #if !defined(OS_CHROMEOS)
 883   // Convert active labs into switches. This needs to be done before
 884   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
 885   // affected by experiment flags (--touch-optimized-ui in particular).
 886   // On ChromeOS system level flags are applied from the device settings from
 887   // the session manager.
 888   {
 889     TRACE_EVENT0("startup",
 890         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
 891     about_flags::PrefServiceFlagsStorage flags_storage_(
 892         g_browser_process->local_state());
 893     about_flags::ConvertFlagsToSwitches(&flags_storage_,
 894                                         base::CommandLine::ForCurrentProcess(),
 895                                         about_flags::kAddSentinels);
 896   }
 897 #endif  // !defined(OS_CHROMEOS)
 898
 899   local_state_->UpdateCommandLinePrefStore(
 900       new CommandLinePrefStore(base::CommandLine::ForCurrentProcess()));
 901
 902   // Reset the command line in the crash report details, since we may have
 903   // just changed it to include experiments.
 904   crash_keys::SetSwitchesFromCommandLine(
 905       base::CommandLine::ForCurrentProcess());
 906
 907   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
 908   // needed when loading the MainMenu.nib and the language doesn't depend on
 909   // anything since it comes from Cocoa.
 910 #if defined(OS_MACOSX)
 911   std::string locale =
 912       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
 913   browser_process_->SetApplicationLocale(locale);
 914 #else
 915   const std::string locale =
 916       local_state_->GetString(prefs::kApplicationLocale);
 917
 918   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
 919   // method InitSharedInstance is ignored.
 920
 921   TRACE_EVENT_BEGIN0("startup",
 922       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 923   const std::string loaded_locale =
 924       ui::ResourceBundle::InitSharedInstanceWithLocale(
 925           locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 926   TRACE_EVENT_END0("startup",
 927       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 928
 929   if (loaded_locale.empty() &&
 930       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
 931     ShowMissingLocaleMessageBox();
 932     return chrome::RESULT_CODE_MISSING_DATA;
 933   }
 934   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
 935   browser_process_->SetApplicationLocale(loaded_locale);
 936
 937   {
 938     TRACE_EVENT0("startup",
 939         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
 940     base::FilePath resources_pack_path;
 941     PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 942 #if defined(OS_ANDROID)
 943     ui::LoadMainAndroidPackFile("assets/resources.pak", resources_pack_path);
 944 #else
 945     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 946         resources_pack_path, ui::SCALE_FACTOR_NONE);
 947 #endif  // defined(OS_ANDROID)
 948   }
 949 #endif  // defined(OS_MACOSX)
 950
 951   // Android does first run in Java instead of native.
 952   // Chrome OS has its own out-of-box-experience code.
 953 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 954   // On first run, we need to process the predictor preferences before the
 955   // browser's profile_manager object is created, but after ResourceBundle
 956   // is initialized.
 957   if (first_run::IsChromeFirstRun()) {
 958     first_run::ProcessMasterPreferencesResult pmp_result =
 959         first_run::ProcessMasterPreferences(user_data_dir_,
 960                                             master_prefs_.get());
 961     if (pmp_result == first_run::EULA_EXIT_NOW)
 962       return chrome::RESULT_CODE_EULA_REFUSED;
 963
 964     if (!parsed_command_line().HasSwitch(switches::kApp) &&
 965         !parsed_command_line().HasSwitch(switches::kAppId) &&
 966         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
 967       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
 968     }
 969
 970     // TODO(macourteau): refactor preferences that are copied from
 971     // master_preferences into local_state, as a "local_state" section in
 972     // master preferences. If possible, a generic solution would be preferred
 973     // over a copy one-by-one of specific preferences. Also see related TODO
 974     // in first_run.h.
 975
 976     // Store the initial VariationsService seed in local state, if it exists
 977     // in master prefs.
 978     if (!master_prefs_->variations_seed.empty() ||
 979         !master_prefs_->compressed_variations_seed.empty()) {
 980       if (!master_prefs_->variations_seed.empty()) {
 981         local_state_->SetString(prefs::kVariationsSeed,
 982                               master_prefs_->variations_seed);
 983       }
 984       if (!master_prefs_->compressed_variations_seed.empty()) {
 985         local_state_->SetString(prefs::kVariationsCompressedSeed,
 986                                 master_prefs_->compressed_variations_seed);
 987       }
 988       if (!master_prefs_->variations_seed_signature.empty()) {
 989         local_state_->SetString(prefs::kVariationsSeedSignature,
 990                                 master_prefs_->variations_seed_signature);
 991       }
 992       // Set the variation seed date to the current system time. If the user's
 993       // clock is incorrect, this may cause some field trial expiry checks to
 994       // not do the right thing until the next seed update from the server,
 995       // when this value will be updated.
 996       local_state_->SetInt64(prefs::kVariationsSeedDate,
 997                              base::Time::Now().ToInternalValue());
 998     }
 999
1000     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
1001       local_state_->SetString(
1002           prefs::kBrowserSuppressDefaultBrowserPrompt,
1003           master_prefs_->suppress_default_browser_prompt_for_version);
1004     }
1005
1006 #if defined(OS_WIN)
1007     if (!master_prefs_->welcome_page_on_os_upgrade_enabled)
1008       local_state_->SetBoolean(prefs::kWelcomePageOnOSUpgradeEnabled, false);
1009 #endif
1010   }
1011 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1012
1013 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
1014   // Set the product channel for crash reports.
1015   base::debug::SetCrashKeyValue(crash_keys::kChannel,
1016                                 chrome::GetChannelString());
1017 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
1018
1019   // Initialize tracking synchronizer system.
1020   tracking_synchronizer_ = new metrics::TrackingSynchronizer(
1021       make_scoped_ptr(new base::DefaultTickClock()));
1022
1023 #if defined(OS_MACOSX)
1024   // Get the Keychain API to register for distributed notifications on the main
1025   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
1026   // which doesn't. This ensures those notifications will get delivered
1027   // properly. See issue 37766.
1028   // (Note that the callback mask here is empty. I don't want to register for
1029   // any callbacks, I just want to initialize the mechanism.)
1030   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
1031 #endif  // defined(OS_MACOSX)
1032
1033 #if defined(OS_CHROMEOS)
1034   // Must be done after g_browser_process is constructed, before
1035   // SetupMetricsAndFieldTrials().
1036   chromeos::CrosSettings::Initialize();
1037 #endif  // defined(OS_CHROMEOS)
1038
1039   // Now the command line has been mutated based on about:flags, we can setup
1040   // metrics and initialize field trials. The field trials are needed by
1041   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
1042   SetupMetricsAndFieldTrials();
1043
1044   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
1045   browser_process_->PreCreateThreads();
1046
1047   return content::RESULT_CODE_NORMAL_EXIT;
1048 }
1049
1050 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
1051   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
1052   TRACK_SCOPED_REGION(
1053       "Startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
1054
1055   result_code_ = PreMainMessageLoopRunImpl();
1056
1057   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1058     chrome_extra_parts_[i]->PreMainMessageLoopRun();
1059 }
1060
1061 // PreMainMessageLoopRun calls these extra stages in the following order:
1062 //  PreMainMessageLoopRunImpl()
1063 //   ... initial setup, including browser_process_ setup.
1064 //   PreProfileInit()
1065 //   ... additional setup, including CreateProfile()
1066 //   PostProfileInit()
1067 //   ... additional setup
1068 //   PreBrowserStart()
1069 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
1070 //   PostBrowserStart()
1071
1072 void ChromeBrowserMainParts::PreProfileInit() {
1073   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
1074
1075   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1076     chrome_extra_parts_[i]->PreProfileInit();
1077
1078 #if !defined(OS_ANDROID)
1079   // Initialize the feedback uploader so it can setup notifications for profile
1080   // creation.
1081   feedback::FeedbackProfileObserver::Initialize();
1082
1083   // Ephemeral profiles may have been left behind if the browser crashed.
1084   g_browser_process->profile_manager()->CleanUpEphemeralProfiles();
1085 #endif  // !defined(OS_ANDROID)
1086
1087 #if defined(ENABLE_EXTENSIONS)
1088   javascript_dialog_extensions_client::InstallClient();
1089 #endif  // defined(ENABLE_EXTENSIONS)
1090
1091 #if !defined(OS_IOS)
1092   InstallChromeJavaScriptNativeDialogFactory();
1093 #endif  // !defined(OS_IOS)
1094 }
1095
1096 void ChromeBrowserMainParts::PostProfileInit() {
1097   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
1098
1099 #if defined(OS_ANDROID)
1100   DevToolsDiscoveryProviderAndroid::Install();
1101 #else
1102   ChromeDevToolsDiscoveryProvider::Install();
1103 #endif  // defined(OS_ANDROID)
1104
1105   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
1106   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1107     chrome_extra_parts_[i]->PostProfileInit();
1108 }
1109
1110 void ChromeBrowserMainParts::PreBrowserStart() {
1111   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
1112   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1113     chrome_extra_parts_[i]->PreBrowserStart();
1114
1115   three_d_observer_.reset(new ThreeDAPIObserver());
1116
1117   // Start the out-of-memory priority manager here so that we give the most
1118   // amount of time for the other services to start up before we start
1119   // adjusting the oom priority.
1120   //
1121   // On CrOS, it is always enabled. On other platforms, it's behind a flag for
1122   // now.
1123 #if defined(OS_CHROMEOS)
1124   g_browser_process->GetOomPriorityManager()->Start();
1125 #elif defined(OS_WIN) || defined(OS_MACOSX)
1126   const std::string group_name =
1127       base::FieldTrialList::FindFullName("AutomaticTabDiscarding");
1128   if (parsed_command_line().HasSwitch(switches::kEnableTabDiscarding) ||
1129       base::StartsWith(group_name, "Enabled", base::CompareCase::SENSITIVE)) {
1130     g_browser_process->GetOomPriorityManager()->Start();
1131   }
1132 #endif
1133 }
1134
1135 void ChromeBrowserMainParts::PostBrowserStart() {
1136   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
1137   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1138     chrome_extra_parts_[i]->PostBrowserStart();
1139 #if !defined(OS_ANDROID)
1140   // Allow ProcessSingleton to process messages.
1141   process_singleton_->Unlock();
1142 #endif  // !defined(OS_ANDROID)
1143 #if defined(ENABLE_WEBRTC)
1144   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
1145   // to reduce the impact on startup time.
1146   BrowserThread::PostDelayedTask(
1147       BrowserThread::UI,
1148       FROM_HERE,
1149       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
1150       base::TimeDelta::FromMinutes(1));
1151 #endif  // defined(ENABLE_WEBRTC)
1152
1153   // At this point, StartupBrowserCreator::Start has run creating initial
1154   // browser windows and tabs, but no progress has been made in loading
1155   // content as the main message loop hasn't started processing tasks yet.
1156   // We setup to observe to the initial page load here to defer running
1157   // task posted via PostAfterStartupTask until its complete.
1158   AfterStartupTaskUtils::StartMonitoringStartup();
1159 }
1160
1161 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
1162   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1163   TRACK_SCOPED_REGION(
1164       "Startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1165
1166   SCOPED_UMA_HISTOGRAM_LONG_TIMER("Startup.PreMainMessageLoopRunImplLongTime");
1167   const base::TimeTicks start_time_step1 = base::TimeTicks::Now();
1168
1169 #if defined(OS_WIN)
1170   // Windows parental controls calls can be slow, so we do an early init here
1171   // that calculates this value off of the UI thread.
1172   IncognitoModePrefs::InitializePlatformParentalControls();
1173 #endif
1174
1175 #if defined(ENABLE_EXTENSIONS)
1176   if (!variations::GetVariationParamValue(
1177       "LightSpeed", "EarlyInitStartup").empty()) {
1178     // Try to compute this early on another thread so that we don't spend time
1179     // during profile load initializing the extensions APIs.
1180     BrowserThread::PostTask(
1181         BrowserThread::FILE_USER_BLOCKING,
1182         FROM_HERE,
1183         base::Bind(
1184             base::IgnoreResult(&extensions::FeatureProvider::GetAPIFeatures)));
1185   }
1186 #endif
1187
1188   // Android updates the metrics service dynamically depending on whether the
1189   // application is in the foreground or not. Do not start here.
1190 #if !defined(OS_ANDROID)
1191   // Now that the file thread has been started, start recording.
1192   StartMetricsRecording();
1193 #endif  // !defined(OS_ANDROID)
1194
1195   if (!base::debug::BeingDebugged()) {
1196     // Create watchdog thread after creating all other threads because it will
1197     // watch the other threads and they must be running.
1198     browser_process_->watchdog_thread();
1199   }
1200
1201   // Do any initializating in the browser process that requires all threads
1202   // running.
1203   browser_process_->PreMainMessageLoopRun();
1204
1205   // Record last shutdown time into a histogram.
1206   browser_shutdown::ReadLastShutdownInfo();
1207
1208 #if defined(OS_WIN)
1209   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
1210   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
1211   // upgrade/uninstall happen separately.
1212   bool already_running = browser_util::IsBrowserAlreadyRunning();
1213
1214   // If the command line specifies 'uninstall' then we need to work here
1215   // unless we detect another chrome browser running.
1216   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
1217     return DoUninstallTasks(already_running);
1218   }
1219
1220   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
1221       parsed_command_line().HasSwitch(switches::kShowIcons)) {
1222     return ChromeBrowserMainPartsWin::HandleIconsCommands(
1223         parsed_command_line_);
1224   }
1225
1226   ui::SelectFileDialog::SetFactory(new ChromeSelectFileDialogFactory(
1227       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
1228 #endif  // defined(OS_WIN)
1229
1230   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
1231     bool is_managed = g_browser_process->local_state()->IsManagedPreference(
1232         prefs::kDefaultBrowserSettingEnabled);
1233     if (is_managed && !g_browser_process->local_state()->GetBoolean(
1234         prefs::kDefaultBrowserSettingEnabled)) {
1235       return static_cast<int>(chrome::RESULT_CODE_ACTION_DISALLOWED_BY_POLICY);
1236     }
1237
1238     return ShellIntegration::SetAsDefaultBrowser() ?
1239         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
1240         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
1241   }
1242
1243 #if defined(USE_AURA)
1244   // Make sure aura::Env has been initialized.
1245   CHECK(aura::Env::GetInstance());
1246 #endif  // defined(USE_AURA)
1247
1248   // Android doesn't support extensions and doesn't implement ProcessSingleton.
1249 #if !defined(OS_ANDROID)
1250   // If the command line specifies --pack-extension, attempt the pack extension
1251   // startup action and exit.
1252   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
1253     extensions::StartupHelper extension_startup_helper;
1254     if (extension_startup_helper.PackExtension(parsed_command_line()))
1255       return content::RESULT_CODE_NORMAL_EXIT;
1256     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
1257   }
1258
1259   // When another process is running, use that process instead of starting a
1260   // new one. NotifyOtherProcess will currently give the other process up to
1261   // 20 seconds to respond. Note that this needs to be done before we attempt
1262   // to read the profile.
1263   notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
1264   switch (notify_result_) {
1265     case ProcessSingleton::PROCESS_NONE:
1266       // No process already running, fall through to starting a new one.
1267       break;
1268
1269     case ProcessSingleton::PROCESS_NOTIFIED:
1270 #if defined(OS_POSIX) && !defined(OS_MACOSX)
1271       // On POSIX systems, print a message notifying the process is running.
1272       printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
1273           l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
1274 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
1275
1276       // Having a differentiated return type for testing allows for tests to
1277       // verify proper handling of some switches. When not testing, stick to
1278       // the standard Unix convention of returning zero when things went as
1279       // expected.
1280       if (parsed_command_line().HasSwitch(switches::kTestType))
1281         return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
1282       return content::RESULT_CODE_NORMAL_EXIT;
1283
1284     case ProcessSingleton::PROFILE_IN_USE:
1285       return chrome::RESULT_CODE_PROFILE_IN_USE;
1286
1287     case ProcessSingleton::LOCK_ERROR:
1288       LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
1289                     "directory. This means that running multiple instances "
1290                     "would start multiple browser processes rather than "
1291                     "opening a new window in the existing process. Aborting "
1292                     "now to avoid profile corruption.";
1293       return chrome::RESULT_CODE_PROFILE_IN_USE;
1294
1295     default:
1296       NOTREACHED();
1297   }
1298 #endif  // !defined(OS_ANDROID)
1299
1300   // Handle special early return paths (which couldn't be processed even earlier
1301   // as they require the process singleton to be held) first.
1302
1303   std::string try_chrome =
1304       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
1305   if (!try_chrome.empty()) {
1306 #if defined(OS_WIN)
1307     // Setup.exe has determined that we need to run a retention experiment
1308     // and has lauched chrome to show the experiment UI. It is guaranteed that
1309     // no other Chrome is currently running as the process singleton was
1310     // sucessfully grabbed above.
1311     int try_chrome_int;
1312     base::StringToInt(try_chrome, &try_chrome_int);
1313     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
1314         try_chrome_int,
1315         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
1316                    base::Unretained(process_singleton_.get())));
1317     if (answer == TryChromeDialogView::NOT_NOW)
1318       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
1319     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
1320       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
1321     // At this point the user is willing to try chrome again.
1322     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
1323       // Only set in the unattended case, the interactive case is Windows 8.
1324       if (ShellIntegration::CanSetAsDefaultBrowser() ==
1325           ShellIntegration::SET_DEFAULT_UNATTENDED)
1326         ShellIntegration::SetAsDefaultBrowser();
1327     }
1328 #else
1329     // We don't support retention experiments on Mac or Linux.
1330     return content::RESULT_CODE_NORMAL_EXIT;
1331 #endif  // defined(OS_WIN)
1332   }
1333
1334 #if defined(OS_WIN)
1335   // Do the tasks if chrome has been upgraded while it was last running.
1336   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
1337     return content::RESULT_CODE_NORMAL_EXIT;
1338
1339   // Check if there is any machine level Chrome installed on the current
1340   // machine. If yes and the current Chrome process is user level, we do not
1341   // allow the user level Chrome to run. So we notify the user and uninstall
1342   // user level Chrome.
1343   // Note this check needs to happen here (after the process singleton was
1344   // obtained but before potentially creating the first run sentinel).
1345   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
1346     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
1347 #endif  // defined(OS_WIN)
1348
1349 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1350   if (sxs_linux::ShouldMigrateUserDataDir())
1351     return sxs_linux::MigrateUserDataDir();
1352 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1353
1354   // Desktop construction occurs here, (required before profile creation).
1355   PreProfileInit();
1356
1357   // Profile creation ----------------------------------------------------------
1358
1359   metrics::MetricsService::SetExecutionPhase(
1360       metrics::MetricsService::CREATE_PROFILE,
1361       g_browser_process->local_state());
1362
1363   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep1Time",
1364                       base::TimeTicks::Now() - start_time_step1);
1365
1366   // This step is costly and is already measured in Startup.CreateFirstProfile
1367   // and more directly Profile.CreateAndInitializeProfile.
1368   profile_ = CreatePrimaryProfile(parameters(),
1369                                   user_data_dir_,
1370                                   parsed_command_line());
1371   if (!profile_)
1372     return content::RESULT_CODE_NORMAL_EXIT;
1373
1374 #if !defined(OS_ANDROID)
1375   const base::TimeTicks start_time_step2 = base::TimeTicks::Now();
1376   // The first run sentinel must be created after the process singleton was
1377   // grabbed and no early return paths were otherwise hit above.
1378   first_run::CreateSentinelIfNeeded();
1379 #endif  // !defined(OS_ANDROID)
1380
1381 #if defined(ENABLE_BACKGROUND)
1382   // Autoload any profiles which are running background apps.
1383   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
1384   browser_process_->profile_manager()->AutoloadProfiles();
1385 #endif  // defined(ENABLE_BACKGROUND)
1386   // Post-profile init ---------------------------------------------------------
1387
1388   TranslateService::Initialize();
1389
1390   // Needs to be done before PostProfileInit, since login manager on CrOS is
1391   // called inside PostProfileInit.
1392   content::WebUIControllerFactory::RegisterFactory(
1393       ChromeWebUIControllerFactory::GetInstance());
1394
1395   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
1396   // So make sure to create it before that.
1397 #if !defined(DISABLE_NACL)
1398   NaClBrowserDelegateImpl* delegate =
1399       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
1400   nacl::NaClBrowser::SetDelegate(delegate);
1401 #endif  // !defined(DISABLE_NACL)
1402
1403   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
1404   // (requires supporting early exit).
1405   PostProfileInit();
1406
1407   // Retrieve cached GL strings from local state and use them for GPU
1408   // blacklist decisions.
1409   if (g_browser_process->gl_string_manager())
1410     g_browser_process->gl_string_manager()->Initialize();
1411
1412   // Create an instance of GpuModeManager to watch gpu mode pref change.
1413   g_browser_process->gpu_mode_manager();
1414
1415 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1416   // Show the First Run UI if this is the first time Chrome has been run on
1417   // this computer, or we're being compelled to do so by a command line flag.
1418   // Note that this be done _after_ the PrefService is initialized and all
1419   // preferences are registered, since some of the code that the importer
1420   // touches reads preferences.
1421   if (first_run::IsChromeFirstRun()) {
1422     first_run::AutoImport(profile_,
1423                           master_prefs_->homepage_defined,
1424                           master_prefs_->do_import_items,
1425                           master_prefs_->dont_import_items,
1426                           master_prefs_->import_bookmarks_path);
1427
1428     // Note: this can pop the first run consent dialog on linux.
1429     first_run::DoPostImportTasks(profile_,
1430                                  master_prefs_->make_chrome_default_for_user);
1431
1432     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
1433       browser_creator_->set_show_main_browser_window(
1434           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
1435     } else {
1436       browser_creator_->set_is_default_browser_dialog_suppressed(true);
1437     }
1438   }
1439 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1440
1441 #if defined(OS_WIN)
1442   // Sets things up so that if we crash from this point on, a dialog will
1443   // popup asking the user to restart chrome. It is done this late to avoid
1444   // testing against a bunch of special cases that are taken care early on.
1445   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
1446       parsed_command_line());
1447
1448   // Registers Chrome with the Windows Restart Manager, which will restore the
1449   // Chrome session when the computer is restarted after a system update.
1450   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
1451   // but should run on startup if extended to handle crashes/hangs/patches.
1452   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
1453   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
1454     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
1455         parsed_command_line());
1456   }
1457
1458   // Verify that the profile is not on a network share and if so prepare to show
1459   // notification to the user.
1460   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
1461     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
1462         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
1463                    profile_->GetPath()));
1464   }
1465 #endif  // defined(OS_WIN)
1466
1467 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1468   // Init the RLZ library. This just binds the dll and schedules a task on the
1469   // file thread to be run sometime later. If this is the first run we record
1470   // the installation event.
1471   PrefService* pref_service = profile_->GetPrefs();
1472   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
1473       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
1474   // Negative ping delay means to send ping immediately after a first search is
1475   // recorded.
1476   rlz::RLZTracker::SetRlzDelegate(
1477       make_scoped_ptr(new ChromeRLZTrackerDelegate));
1478   rlz::RLZTracker::InitRlzDelayed(
1479       first_run::IsChromeFirstRun(), ping_delay < 0,
1480       base::TimeDelta::FromMilliseconds(abs(ping_delay)),
1481       ChromeRLZTrackerDelegate::IsGoogleDefaultSearch(profile_),
1482       ChromeRLZTrackerDelegate::IsGoogleHomepage(profile_),
1483       ChromeRLZTrackerDelegate::IsGoogleInStartpages(profile_));
1484 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1485
1486   // Configure modules that need access to resources.
1487   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
1488
1489   // In unittest mode, this will do nothing.  In normal mode, this will create
1490   // the global IntranetRedirectDetector instance, which will promptly go to
1491   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
1492   // to see if it should do anything else.
1493   //
1494   // A simpler way of doing all this would be to have some function which could
1495   // give the time elapsed since startup, and simply have this object check that
1496   // when asked to initialize itself, but this doesn't seem to exist.
1497   //
1498   // This can't be created in the BrowserProcessImpl constructor because it
1499   // needs to read prefs that get set after that runs.
1500   browser_process_->intranet_redirect_detector();
1501   GoogleSearchCounter::RegisterForNotifications();
1502
1503 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
1504   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
1505     base::FilePath path =
1506         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
1507     printing::PrintedDocument::set_debug_dump_path(path);
1508   }
1509 #endif  // defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
1510
1511   HandleTestParameters(parsed_command_line());
1512   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
1513       base::debug::BeingDebugged());
1514
1515   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
1516       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
1517   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
1518       browser_process_->GetApplicationLocale());
1519
1520   // Start watching for hangs during startup. We disarm this hang detector when
1521   // ThreadWatcher takes over or when browser is shutdown or when
1522   // startup_watcher_ is deleted.
1523   metrics::MetricsService::SetExecutionPhase(
1524       metrics::MetricsService::STARTUP_TIMEBOMB_ARM,
1525       g_browser_process->local_state());
1526   startup_watcher_->Arm(base::TimeDelta::FromSeconds(600));
1527
1528   // On mobile, need for clean shutdown arises only when the application comes
1529   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
1530   // http://crbug.com/179143
1531 #if !defined(OS_ANDROID)
1532   // Start watching for a hang.
1533   browser_process_->metrics_service()->LogNeedForCleanShutdown();
1534 #endif  // !defined(OS_ANDROID)
1535
1536 #if defined(ENABLE_PRINT_PREVIEW)
1537   // Create the instance of the cloud print proxy service so that it can launch
1538   // the service process if needed. This is needed because the service process
1539   // might have shutdown because an update was available.
1540   // TODO(torne): this should maybe be done with
1541   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
1542   // instead?
1543   CloudPrintProxyServiceFactory::GetForProfile(profile_);
1544 #endif  // defined(ENABLE_PRINT_PREVIEW)
1545
1546   // Start watching all browser threads for responsiveness.
1547   metrics::MetricsService::SetExecutionPhase(
1548       metrics::MetricsService::THREAD_WATCHER_START,
1549       g_browser_process->local_state());
1550   ThreadWatcherList::StartWatchingAll(parsed_command_line());
1551
1552 #if defined(OS_ANDROID)
1553   ThreadWatcherAndroid::RegisterApplicationStatusListener();
1554 #endif  // defined(OS_ANDROID)
1555
1556 #if !defined(DISABLE_NACL)
1557   BrowserThread::PostTask(
1558       BrowserThread::IO,
1559       FROM_HERE,
1560       base::Bind(nacl::NaClProcessHost::EarlyStartup));
1561 #endif  // !defined(DISABLE_NACL)
1562
1563   // Make sure initial prefs are recorded
1564   PrefMetricsService::Factory::GetForProfile(profile_);
1565
1566   PreBrowserStart();
1567
1568   // Instantiate the notification UI manager, as this triggers a perf timer
1569   // used to measure startup time. TODO(stevenjb): Figure out what is actually
1570   // triggering the timer and call that explicitly in the approprate place.
1571   // http://crbug.com/105065.
1572   browser_process_->notification_ui_manager();
1573
1574   // This must be called prior to RegisterComponentsForUpdate, in case the CLD
1575   // data source is based on the Component Updater.
1576   translate::BrowserCldUtils::ConfigureDefaultDataProvider();
1577
1578   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
1579     RegisterComponentsForUpdate();
1580
1581 #if defined(OS_ANDROID)
1582   chrome_variations::VariationsService* variations_service =
1583       browser_process_->variations_service();
1584   if (variations_service) {
1585     // Just initialize the policy prefs service here. Variations seed fetching
1586     // will be initialized when the app enters foreground mode.
1587     variations_service->set_policy_pref_service(profile_->GetPrefs());
1588   }
1589   translate::TranslateDownloadManager::RequestLanguageList(
1590       profile_->GetPrefs());
1591
1592 #else
1593   // Most general initialization is behind us, but opening a
1594   // tab and/or session restore and such is still to be done.
1595   base::TimeTicks browser_open_start = base::TimeTicks::Now();
1596
1597   // We are in regular browser boot sequence. Open initial tabs and enter the
1598   // main message loop.
1599 #if defined(OS_CHROMEOS)
1600   // On ChromeOS multiple profiles doesn't apply, and will break if we load
1601   // them this early as the cryptohome hasn't yet been mounted (which happens
1602   // only once we log in.
1603   std::vector<Profile*> last_opened_profiles;
1604 #else
1605   std::vector<Profile*> last_opened_profiles =
1606       g_browser_process->profile_manager()->GetLastOpenedProfiles();
1607 #endif  // defined(OS_CHROMEOS)
1608
1609   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep2Time",
1610                       base::TimeTicks::Now() - start_time_step2);
1611
1612   // This step is costly and is already measured in
1613   // Startup.StartupBrowserCreator_Start.
1614   bool started = browser_creator_->Start(
1615       parsed_command_line(), base::FilePath(), profile_, last_opened_profiles);
1616   const base::TimeTicks start_time_step3 = base::TimeTicks::Now();
1617   if (started) {
1618 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1619     // Initialize autoupdate timer. Timer callback costs basically nothing
1620     // when browser is not in persistent mode, so it's OK to let it ride on
1621     // the main thread. This needs to be done here because we don't want
1622     // to start the timer when Chrome is run inside a test harness.
1623     browser_process_->StartAutoupdateTimer();
1624 #endif  // defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1625
1626 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1627     // On Linux, the running exe will be updated if an upgrade becomes
1628     // available while the browser is running.  We need to save the last
1629     // modified time of the exe, so we can compare to determine if there is
1630     // an upgrade while the browser is kept alive by a persistent extension.
1631     upgrade_util::SaveLastModifiedTimeOfExe();
1632 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1633
1634     // Record now as the last successful chrome start.
1635     GoogleUpdateSettings::SetLastRunTime();
1636
1637 #if defined(OS_MACOSX)
1638     // Call Recycle() here as late as possible, before going into the loop
1639     // because Start() will add things to it while creating the main window.
1640     if (parameters().autorelease_pool)
1641       parameters().autorelease_pool->Recycle();
1642 #endif  // defined(OS_MACOSX)
1643
1644     base::TimeDelta delay = base::TimeTicks::Now() - browser_open_start;
1645     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserOpenTabs", delay);
1646
1647     // If we're running tests (ui_task is non-null), then we don't want to
1648     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
1649     // RequestLanguageList
1650     if (parameters().ui_task == NULL) {
1651       // Request new variations seed information from server.
1652       chrome_variations::VariationsService* variations_service =
1653           browser_process_->variations_service();
1654       if (variations_service) {
1655         variations_service->StartRepeatedVariationsSeedFetch();
1656
1657 #if defined(OS_WIN)
1658         variations_service->StartGoogleUpdateRegistrySync();
1659 #endif  // defined(OS_WIN)
1660       }
1661
1662       translate::TranslateDownloadManager::RequestLanguageList(
1663           profile_->GetPrefs());
1664     }
1665
1666     run_message_loop_ = true;
1667   } else {
1668     run_message_loop_ = false;
1669   }
1670   browser_creator_.reset();
1671
1672 #if !defined(OS_LINUX) || defined(OS_CHROMEOS)  // http://crbug.com/426393
1673   if (g_browser_process->metrics_service()->reporting_active())
1674     content::StartPowerUsageMonitor();
1675 #endif  // !defined(OS_LINUX) || defined(OS_CHROMEOS)
1676
1677   process_power_collector_.reset(new ProcessPowerCollector);
1678   process_power_collector_->Initialize();
1679 #endif  // !defined(OS_ANDROID)
1680
1681   PostBrowserStart();
1682
1683   if (parameters().ui_task) {
1684     parameters().ui_task->Run();
1685     delete parameters().ui_task;
1686     run_message_loop_ = false;
1687   }
1688 #if defined(OS_ANDROID)
1689   // We never run the C++ main loop on Android, since the UI thread message
1690   // loop is controlled by the OS, so this is as close as we can get to
1691   // the start of the main loop.
1692   if (result_code_ <= 0) {
1693     RecordBrowserStartupTime();
1694   }
1695 #endif  // defined(OS_ANDROID)
1696
1697 #if !defined(OS_ANDROID)
1698   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep3Time",
1699                       base::TimeTicks::Now() - start_time_step3);
1700 #endif  // !defined(OS_ANDROID)
1701
1702   return result_code_;
1703 }
1704
1705 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
1706   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
1707 #if defined(OS_ANDROID)
1708   // Chrome on Android does not use default MessageLoop. It has its own
1709   // Android specific MessageLoop
1710   NOTREACHED();
1711   return true;
1712 #else
1713   // Set the result code set in PreMainMessageLoopRun or set above.
1714   *result_code = result_code_;
1715   if (!run_message_loop_)
1716     return true;  // Don't run the default message loop.
1717
1718   // These should be invoked as close to the start of the browser's
1719   // UI thread message loop as possible to get a stable measurement
1720   // across versions.
1721   RecordBrowserStartupTime();
1722
1723   DCHECK(base::MessageLoopForUI::IsCurrent());
1724   base::RunLoop run_loop;
1725
1726   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
1727
1728   metrics::MetricsService::SetExecutionPhase(
1729       metrics::MetricsService::MAIN_MESSAGE_LOOP_RUN,
1730       g_browser_process->local_state());
1731   run_loop.Run();
1732
1733   return true;
1734 #endif  // defined(OS_ANDROID)
1735 }
1736
1737 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
1738   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
1739 #if defined(OS_ANDROID)
1740   // Chrome on Android does not use default MessageLoop. It has its own
1741   // Android specific MessageLoop
1742   NOTREACHED();
1743 #else
1744   // Start watching for jank during shutdown. It gets disarmed when
1745   // |shutdown_watcher_| object is destructed.
1746   metrics::MetricsService::SetExecutionPhase(
1747       metrics::MetricsService::SHUTDOWN_TIMEBOMB_ARM,
1748       g_browser_process->local_state());
1749   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1750
1751   // Disarm the startup hang detector time bomb if it is still Arm'ed.
1752   startup_watcher_->Disarm();
1753
1754   // Remove observers attached to D-Bus clients before DbusThreadManager is
1755   // shut down.
1756   process_power_collector_.reset();
1757
1758   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1759     chrome_extra_parts_[i]->PostMainMessageLoopRun();
1760
1761   // Some tests don't set parameters.ui_task, so they started translate
1762   // language fetch that was never completed so we need to cleanup here
1763   // otherwise it will be done by the destructor in a wrong thread.
1764   TranslateService::Shutdown(parameters().ui_task == NULL);
1765
1766   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
1767     process_singleton_->Cleanup();
1768
1769   // Stop all tasks that might run on WatchDogThread.
1770   ThreadWatcherList::StopWatchingAll();
1771
1772   browser_process_->metrics_service()->Stop();
1773
1774   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
1775   browser_process_->StartTearDown();
1776 #endif  // defined(OS_ANDROID)
1777 }
1778
1779 void ChromeBrowserMainParts::PostDestroyThreads() {
1780 #if defined(OS_ANDROID)
1781   // On Android, there is no quit/exit. So the browser's main message loop will
1782   // not finish.
1783   NOTREACHED();
1784 #else
1785   browser_process_->PostDestroyThreads();
1786   // browser_shutdown takes care of deleting browser_process, so we need to
1787   // release it.
1788   ignore_result(browser_process_.release());
1789   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
1790   master_prefs_.reset();
1791   process_singleton_.reset();
1792   device_event_log::Shutdown();
1793
1794   // We need to do this check as late as possible, but due to modularity, this
1795   // may be the last point in Chrome.  This would be more effective if done at
1796   // a higher level on the stack, so that it is impossible for an early return
1797   // to bypass this code.  Perhaps we need a *final* hook that is called on all
1798   // paths from content/browser/browser_main.
1799   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
1800
1801 #if defined(OS_CHROMEOS)
1802   chromeos::CrosSettings::Shutdown();
1803 #endif  // defined(OS_CHROMEOS)
1804 #endif  // defined(OS_ANDROID)
1805 }
1806
1807 // Public members:
1808
1809 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
1810   chrome_extra_parts_.push_back(parts);
1811 }