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