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/debug/trace_event.h"
  17 #include "base/files/file_path.h"
  18 #include "base/files/file_util.h"
  19 #include "base/metrics/field_trial.h"
  20 #include "base/metrics/histogram.h"
  21 #include "base/path_service.h"
  22 #include "base/prefs/json_pref_store.h"
  23 #include "base/prefs/pref_registry_simple.h"
  24 #include "base/prefs/pref_service.h"
  25 #include "base/prefs/pref_value_store.h"
  26 #include "base/prefs/scoped_user_pref_update.h"
  27 #include "base/process/process_info.h"
  28 #include "base/run_loop.h"
  29 #include "base/strings/string_number_conversions.h"
  30 #include "base/strings/string_piece.h"
  31 #include "base/strings/string_split.h"
  32 #include "base/strings/sys_string_conversions.h"
  33 #include "base/strings/utf_string_conversions.h"
  34 #include "base/sys_info.h"
  35 #include "base/threading/platform_thread.h"
  36 #include "base/time/time.h"
  37 #include "base/values.h"
  38 #include "build/build_config.h"
  39 #include "chrome/browser/about_flags.h"
  40 #include "chrome/browser/browser_process.h"
  41 #include "chrome/browser/browser_process_impl.h"
  42 #include "chrome/browser/browser_process_platform_part.h"
  43 #include "chrome/browser/browser_shutdown.h"
  44 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  45 #include "chrome/browser/component_updater/cld_component_installer.h"
  46 #include "chrome/browser/component_updater/ev_whitelist_component_installer.h"
  47 #include "chrome/browser/component_updater/flash_component_installer.h"
  48 #include "chrome/browser/component_updater/recovery_component_installer.h"
  49 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
  50 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
  51 #include "chrome/browser/defaults.h"
  52 #include "chrome/browser/first_run/first_run.h"
  53 #include "chrome/browser/first_run/upgrade_util.h"
  54 #include "chrome/browser/google/google_search_counter.h"
  55 #include "chrome/browser/gpu/gl_string_manager.h"
  56 #include "chrome/browser/gpu/three_d_api_observer.h"
  57 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  58 #include "chrome/browser/metrics/field_trial_synchronizer.h"
  59 #include "chrome/browser/metrics/thread_watcher.h"
  60 #include "chrome/browser/metrics/tracking_synchronizer.h"
  61 #include "chrome/browser/metrics/variations/variations_service.h"
  62 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
  63 #include "chrome/browser/net/chrome_net_log.h"
  64 #include "chrome/browser/net/crl_set_fetcher.h"
  65 #include "chrome/browser/notifications/desktop_notification_service.h"
  66 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
  67 #include "chrome/browser/performance_monitor/performance_monitor.h"
  68 #include "chrome/browser/plugins/plugin_prefs.h"
  69 #include "chrome/browser/power/process_power_collector.h"
  70 #include "chrome/browser/pref_service_flags_storage.h"
  71 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  72 #include "chrome/browser/prefs/command_line_pref_store.h"
  73 #include "chrome/browser/prefs/pref_metrics_service.h"
  74 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
  75 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
  76 #include "chrome/browser/process_singleton.h"
  77 #include "chrome/browser/profiles/profile.h"
  78 #include "chrome/browser/profiles/profile_manager.h"
  79 #include "chrome/browser/profiles/profiles_state.h"
  80 #include "chrome/browser/shell_integration.h"
  81 #include "chrome/browser/translate/translate_service.h"
  82 #include "chrome/browser/ui/app_list/app_list_service.h"
  83 #include "chrome/browser/ui/browser.h"
  84 #include "chrome/browser/ui/browser_finder.h"
  85 #include "chrome/browser/ui/host_desktop.h"
  86 #include "chrome/browser/ui/startup/bad_flags_prompt.h"
  87 #include "chrome/browser/ui/startup/default_browser_prompt.h"
  88 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  89 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
  90 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
  91 #include "chrome/common/chrome_constants.h"
  92 #include "chrome/common/chrome_paths.h"
  93 #include "chrome/common/chrome_result_codes.h"
  94 #include "chrome/common/chrome_switches.h"
  95 #include "chrome/common/crash_keys.h"
  96 #include "chrome/common/env_vars.h"
  97 #include "chrome/common/logging_chrome.h"
  98 #include "chrome/common/net/net_resource_provider.h"
  99 #include "chrome/common/pref_names.h"
 100 #include "chrome/common/profiling.h"
 101 #include "chrome/grit/generated_resources.h"
 102 #include "chrome/installer/util/google_update_settings.h"
 103 #include "components/component_updater/component_updater_service.h"
 104 #include "components/google/core/browser/google_util.h"
 105 #include "components/language_usage_metrics/language_usage_metrics.h"
 106 #include "components/metrics/metrics_service.h"
 107 #include "components/nacl/browser/nacl_browser.h"
 108 #include "components/rappor/rappor_service.h"
 109 #include "components/signin/core/common/profile_management_switches.h"
 110 #include "components/startup_metric_utils/startup_metric_utils.h"
 111 #include "components/translate/content/common/cld_data_source.h"
 112 #include "components/translate/core/browser/translate_download_manager.h"
 113 #include "components/variations/variations_http_header_provider.h"
 114 #include "content/public/browser/browser_thread.h"
 115 #include "content/public/browser/notification_observer.h"
 116 #include "content/public/browser/notification_registrar.h"
 117 #include "content/public/browser/notification_service.h"
 118 #include "content/public/browser/notification_types.h"
 119 #include "content/public/browser/site_instance.h"
 120 #include "content/public/common/content_client.h"
 121 #include "content/public/common/content_switches.h"
 122 #include "content/public/common/main_function_params.h"
 123 #include "grit/platform_locale_settings.h"
 124 #include "net/base/net_module.h"
 125 #include "net/base/sdch_manager.h"
 126 #include "net/cookies/cookie_monster.h"
 127 #include "net/http/http_network_layer.h"
 128 #include "net/http/http_stream_factory.h"
 129 #include "net/url_request/url_request.h"
 130 #include "ui/base/l10n/l10n_util.h"
 131 #include "ui/base/layout.h"
 132 #include "ui/base/resource/resource_bundle.h"
 133 #include "ui/strings/grit/app_locale_settings.h"
 134
 135 #if defined(OS_ANDROID)
 136 #include "chrome/browser/metrics/thread_watcher_android.h"
 137 #else
 138 #include "chrome/browser/feedback/feedback_profile_observer.h"
 139 #endif
 140
 141 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 142 #include "chrome/browser/first_run/upgrade_util_linux.h"
 143 #include "chrome/browser/sxs_linux.h"
 144 #endif
 145
 146 #if defined(OS_CHROMEOS)
 147 #include "chrome/browser/chromeos/settings/cros_settings.h"
 148 #include "chromeos/chromeos_switches.h"
 149 #include "chromeos/settings/cros_settings_names.h"
 150 #endif
 151
 152 // TODO(port): several win-only methods have been pulled out of this, but
 153 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 154 // other platforms. For now, it's just a stub. This is a serious work in
 155 // progress and should not be taken as an indication of a real refactoring.
 156
 157 #if defined(OS_WIN)
 158 #include "base/environment.h"  // For PreRead experiment.
 159 #include "base/win/windows_version.h"
 160 #include "chrome/browser/browser_util_win.h"
 161 #include "chrome/browser/chrome_browser_main_win.h"
 162 #include "chrome/browser/chrome_select_file_dialog_factory_win.h"
 163 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 164 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 165 #include "chrome/browser/first_run/upgrade_util_win.h"
 166 #include "chrome/browser/ui/network_profile_bubble.h"
 167 #include "chrome/installer/util/helper.h"
 168 #include "chrome/installer/util/install_util.h"
 169 #include "chrome/installer/util/shell_util.h"
 170 #include "net/base/net_util.h"
 171 #include "ui/base/l10n/l10n_util_win.h"
 172 #include "ui/gfx/win/dpi.h"
 173 #include "ui/shell_dialogs/select_file_dialog.h"
 174 #endif  // defined(OS_WIN)
 175
 176 #if defined(OS_MACOSX)
 177 #include <Security/Security.h>
 178
 179 #include "base/mac/scoped_nsautorelease_pool.h"
 180 #include "chrome/browser/mac/keystone_glue.h"
 181 #endif
 182
 183 #if !defined(DISABLE_NACL)
 184 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 185 #include "components/nacl/browser/nacl_process_host.h"
 186 #endif
 187
 188 #if defined(ENABLE_EXTENSIONS)
 189 #include "chrome/browser/extensions/startup_helper.h"
 190 #include "extensions/browser/extension_protocols.h"
 191 #endif
 192
 193 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
 194 #include "printing/printed_document.h"
 195 #endif
 196
 197 #if defined(ENABLE_RLZ)
 198 #include "chrome/browser/rlz/rlz.h"
 199 #endif
 200
 201 #if defined(ENABLE_WEBRTC)
 202 #include "chrome/browser/media/webrtc_log_util.h"
 203 #endif
 204
 205 #if defined(USE_AURA)
 206 #include "ui/aura/env.h"
 207 #endif
 208
 209 using content::BrowserThread;
 210
 211 namespace {
 212
 213 // This function provides some ways to test crash and assertion handling
 214 // behavior of the program.
 215 void HandleTestParameters(const CommandLine& command_line) {
 216   // This parameter causes an assertion.
 217   if (command_line.HasSwitch(switches::kBrowserAssertTest)) {
 218     DCHECK(false);
 219   }
 220
 221   // This parameter causes a null pointer crash (crash reporter trigger).
 222   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
 223     int* bad_pointer = NULL;
 224     *bad_pointer = 0;
 225   }
 226 }
 227
 228 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 229 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
 230                         const std::vector<GURL>& new_tabs) {
 231   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
 232        it != new_tabs.end(); ++it) {
 233     if (it->is_valid())
 234       browser_creator->AddFirstRunTab(*it);
 235   }
 236 }
 237 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 238
 239 // Returns the new local state object, guaranteed non-NULL.
 240 // |local_state_task_runner| must be a shutdown-blocking task runner.
 241 PrefService* InitializeLocalState(
 242     base::SequencedTaskRunner* local_state_task_runner,
 243     const CommandLine& parsed_command_line) {
 244   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
 245   base::FilePath local_state_path;
 246   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
 247   bool local_state_file_exists = base::PathExists(local_state_path);
 248
 249   // Load local state.  This includes the application locale so we know which
 250   // locale dll to load.  This also causes local state prefs to be registered.
 251   PrefService* local_state = g_browser_process->local_state();
 252   DCHECK(local_state);
 253
 254 #if defined(OS_WIN)
 255   if (first_run::IsChromeFirstRun()) {
 256     // During first run we read the google_update registry key to find what
 257     // language the user selected when downloading the installer. This
 258     // becomes our default language in the prefs.
 259     // Other platforms obey the system locale.
 260     base::string16 install_lang;
 261     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
 262       local_state->SetString(prefs::kApplicationLocale,
 263                              base::UTF16ToASCII(install_lang));
 264     }
 265   }
 266 #endif  // defined(OS_WIN)
 267
 268   // If the local state file for the current profile doesn't exist and the
 269   // parent profile command line flag is present, then we should inherit some
 270   // local state from the parent profile.
 271   // Checking that the local state file for the current profile doesn't exist
 272   // is the most robust way to determine whether we need to inherit or not
 273   // since the parent profile command line flag can be present even when the
 274   // current profile is not a new one, and in that case we do not want to
 275   // inherit and reset the user's setting.
 276   //
 277   // TODO(mnissler): We should probably just instantiate a
 278   // JSONPrefStore here instead of an entire PrefService. Once this is
 279   // addressed, the call to browser_prefs::RegisterLocalState can move
 280   // to chrome_prefs::CreateLocalState.
 281   if (!local_state_file_exists &&
 282       parsed_command_line.HasSwitch(switches::kParentProfile)) {
 283     base::FilePath parent_profile =
 284         parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
 285     scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
 286     scoped_ptr<PrefService> parent_local_state(
 287         chrome_prefs::CreateLocalState(
 288             parent_profile,
 289             local_state_task_runner,
 290             g_browser_process->policy_service(),
 291             registry,
 292             false));
 293     registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 294     // Right now, we only inherit the locale setting from the parent profile.
 295     local_state->SetString(
 296         prefs::kApplicationLocale,
 297         parent_local_state->GetString(prefs::kApplicationLocale));
 298   }
 299
 300 #if defined(OS_CHROMEOS)
 301   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
 302     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
 303     // Ensure that we start with owner's locale.
 304     if (!owner_locale.empty() &&
 305         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
 306         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
 307       local_state->SetString(prefs::kApplicationLocale, owner_locale);
 308     }
 309   }
 310 #endif
 311
 312   return local_state;
 313 }
 314
 315 // Initializes the primary profile, possibly doing some user prompting to pick
 316 // a fallback profile. Returns the newly created profile, or NULL if startup
 317 // should not continue.
 318 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
 319                               const base::FilePath& user_data_dir,
 320                               const CommandLine& parsed_command_line) {
 321   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
 322   base::Time start = base::Time::Now();
 323   if (profiles::IsMultipleProfilesEnabled() &&
 324       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
 325     g_browser_process->local_state()->SetString(prefs::kProfileLastUsed,
 326         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
 327     // Clear kProfilesLastActive since the user only wants to launch a specific
 328     // profile.
 329     ListPrefUpdate update(g_browser_process->local_state(),
 330                           prefs::kProfilesLastActive);
 331     base::ListValue* profile_list = update.Get();
 332     profile_list->Clear();
 333   }
 334
 335   Profile* profile = NULL;
 336 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 337   // On ChromeOS and Android the ProfileManager will use the same path as the
 338   // one we got passed. GetActiveUserProfile will therefore use the correct path
 339   // automatically.
 340   DCHECK_EQ(user_data_dir.value(),
 341             g_browser_process->profile_manager()->user_data_dir().value());
 342   profile = ProfileManager::GetActiveUserProfile();
 343 #else
 344   base::FilePath profile_path =
 345       GetStartupProfilePath(user_data_dir, parsed_command_line);
 346
 347   // Without NewAvatarMenu, replace guest with any existing profile.
 348   if (!switches::IsNewAvatarMenu() &&
 349       profile_path == ProfileManager::GetGuestProfilePath()) {
 350     profile_path = g_browser_process->profile_manager()->GetProfileInfoCache().
 351         GetPathOfProfileAtIndex(0);
 352   }
 353   profile = g_browser_process->profile_manager()->GetProfile(
 354       profile_path);
 355
 356   // If we're using the --new-profile-management flag and this profile is
 357   // signed out, then we should show the user manager instead. By switching
 358   // the active profile to the guest profile we ensure that no
 359   // browser windows will be opened for the guest profile.
 360   if (switches::IsNewProfileManagement() && !profile->IsGuestSession()) {
 361     ProfileInfoCache& cache =
 362         g_browser_process->profile_manager()->GetProfileInfoCache();
 363     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
 364
 365     if (cache.ProfileIsSigninRequiredAtIndex(profile_index))
 366       profile = g_browser_process->profile_manager()->GetProfile(
 367           ProfileManager::GetGuestProfilePath());
 368   }
 369 #endif
 370   if (profile) {
 371     UMA_HISTOGRAM_LONG_TIMES(
 372         "Startup.CreateFirstProfile", base::Time::Now() - start);
 373     return profile;
 374   }
 375
 376 #if !defined(OS_WIN)
 377   // TODO(port): fix this.  See comments near the definition of
 378   // user_data_dir.  It is better to CHECK-fail here than it is to
 379   // silently exit because of missing code in the above test.
 380   CHECK(profile) << "Cannot get default profile.";
 381 #endif
 382
 383   return NULL;
 384 }
 385
 386 #if defined(OS_MACOSX)
 387 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
 388                           SecKeychainCallbackInfo* info, void* context) {
 389   return noErr;
 390 }
 391 #endif
 392
 393 void RegisterComponentsForUpdate() {
 394   component_updater::ComponentUpdateService* cus =
 395       g_browser_process->component_updater();
 396
 397   // Registration can be before or after cus->Start() so it is ok to post
 398   // a task to the UI thread to do registration once you done the necessary
 399   // file IO to know you existing component version.
 400 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 401   RegisterRecoveryComponent(cus, g_browser_process->local_state());
 402   RegisterPepperFlashComponent(cus);
 403   RegisterSwiftShaderComponent(cus);
 404   RegisterWidevineCdmComponent(cus);
 405 #if !defined(DISABLE_NACL)
 406   g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
 407 #endif
 408 #endif
 409
 410   if (translate::CldDataSource::ShouldRegisterForComponentUpdates()) {
 411     RegisterCldComponent(cus);
 412   }
 413
 414   base::FilePath path;
 415   if (PathService::Get(chrome::DIR_USER_DATA, &path)) {
 416 #if defined(OS_ANDROID)
 417     // The CRLSet component was enabled for some releases. This code attempts to
 418     // delete it from the local disk of those how may have downloaded it.
 419     g_browser_process->crl_set_fetcher()->DeleteFromDisk(path);
 420 #elif !defined(OS_CHROMEOS)
 421     // CRLSetFetcher attempts to load a CRL set from either the local disk or
 422     // network.
 423     // For Chrome OS this registration is delayed until user login.
 424     g_browser_process->crl_set_fetcher()->StartInitialLoad(cus, path);
 425 #endif
 426   }
 427
 428 #if !defined(OS_ANDROID)
 429   // Android does not currently have the EV indicator. No need to get the
 430   // EV certs whitelist on Android, then.
 431   RegisterEVWhitelistComponent(cus);
 432 #endif
 433
 434 #if defined(OS_WIN)
 435   RegisterSwReporterComponent(cus, g_browser_process->local_state());
 436 #endif
 437
 438   cus->Start();
 439 }
 440
 441 #if !defined(OS_ANDROID)
 442 bool ProcessSingletonNotificationCallback(
 443     const CommandLine& command_line,
 444     const base::FilePath& current_directory) {
 445   // Drop the request if the browser process is already in shutdown path.
 446   if (!g_browser_process || g_browser_process->IsShuttingDown())
 447     return false;
 448
 449   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
 450     std::string start_time_string =
 451         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
 452     int64 remote_start_time;
 453     if (base::StringToInt64(start_time_string, &remote_start_time)) {
 454       base::TimeDelta elapsed =
 455           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
 456       if (command_line.HasSwitch(switches::kFastStart)) {
 457         UMA_HISTOGRAM_LONG_TIMES(
 458             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
 459       } else {
 460         UMA_HISTOGRAM_LONG_TIMES(
 461             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
 462       }
 463     }
 464   }
 465
 466   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
 467       command_line);
 468
 469   base::FilePath user_data_dir =
 470       g_browser_process->profile_manager()->user_data_dir();
 471   base::FilePath startup_profile_dir =
 472       GetStartupProfilePath(user_data_dir, command_line);
 473
 474   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
 475       command_line, current_directory, startup_profile_dir);
 476   return true;
 477 }
 478 #endif  // !defined(OS_ANDROID)
 479
 480 void LaunchDevToolsHandlerIfNeeded(const CommandLine& command_line) {
 481   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
 482     std::string port_str =
 483         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
 484     int port;
 485     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
 486       g_browser_process->CreateDevToolsHttpProtocolHandler(
 487           chrome::HOST_DESKTOP_TYPE_NATIVE,
 488           "127.0.0.1",
 489           port);
 490     } else {
 491       DLOG(WARNING) << "Invalid http debugger port number " << port;
 492     }
 493   }
 494 }
 495
 496 // Heap allocated class that listens for first page load, kicks off stat
 497 // recording and then deletes itself.
 498 class LoadCompleteListener : public content::NotificationObserver {
 499  public:
 500   LoadCompleteListener() {
 501     registrar_.Add(this,
 502                    content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
 503                    content::NotificationService::AllSources());
 504   }
 505   virtual ~LoadCompleteListener() {}
 506
 507   // content::NotificationObserver implementation.
 508   virtual void Observe(int type,
 509                        const content::NotificationSource& source,
 510                        const content::NotificationDetails& details) OVERRIDE {
 511     DCHECK_EQ(content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME, type);
 512     startup_metric_utils::OnInitialPageLoadComplete();
 513     delete this;
 514   }
 515
 516  private:
 517   content::NotificationRegistrar registrar_;
 518   DISALLOW_COPY_AND_ASSIGN(LoadCompleteListener);
 519 };
 520
 521 }  // namespace
 522
 523 namespace chrome_browser {
 524
 525 // This error message is not localized because we failed to load the
 526 // localization data files.
 527 #if defined(OS_WIN)
 528 const char kMissingLocaleDataTitle[] = "Missing File Error";
 529 #endif
 530
 531 #if defined(OS_WIN)
 532 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
 533 const char kMissingLocaleDataMessage[] =
 534     "Unable to find locale data files. Please reinstall.";
 535 #endif
 536
 537 }  // namespace chrome_browser
 538
 539 // BrowserMainParts ------------------------------------------------------------
 540
 541 // static
 542 bool ChromeBrowserMainParts::disable_enforcing_cookie_policies_for_tests_ =
 543     false;
 544
 545 ChromeBrowserMainParts::ChromeBrowserMainParts(
 546     const content::MainFunctionParams& parameters)
 547     : parameters_(parameters),
 548       parsed_command_line_(parameters.command_line),
 549       result_code_(content::RESULT_CODE_NORMAL_EXIT),
 550       startup_watcher_(new StartupTimeBomb()),
 551       shutdown_watcher_(new ShutdownWatcherHelper()),
 552       browser_field_trials_(parameters.command_line),
 553       profile_(NULL),
 554       run_message_loop_(true),
 555       notify_result_(ProcessSingleton::PROCESS_NONE),
 556       local_state_(NULL),
 557       restart_last_session_(false) {
 558   // If we're running tests (ui_task is non-null).
 559   if (parameters.ui_task)
 560     browser_defaults::enable_help_app = false;
 561
 562   // Chrome disallows cookies by default. All code paths that want to use
 563   // cookies need to go through one of Chrome's URLRequestContexts which have
 564   // a ChromeNetworkDelegate attached that selectively allows cookies again.
 565   if (!disable_enforcing_cookie_policies_for_tests_)
 566     net::URLRequest::SetDefaultCookiePolicyToBlock();
 567 }
 568
 569 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
 570   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
 571     delete chrome_extra_parts_[i];
 572   chrome_extra_parts_.clear();
 573 }
 574
 575 // This will be called after the command-line has been mutated by about:flags
 576 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
 577   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
 578   // Must initialize metrics after labs have been converted into switches,
 579   // but before field trials are set up (so that client ID is available for
 580   // one-time randomized field trials).
 581
 582   // Initialize FieldTrialList to support FieldTrials that use one-time
 583   // randomization.
 584   metrics::MetricsService* metrics = browser_process_->metrics_service();
 585   field_trial_list_.reset(
 586       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
 587
 588   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 589   if (command_line->HasSwitch(switches::kEnableBenchmarking))
 590     base::FieldTrial::EnableBenchmarking();
 591
 592   // Ensure any field trials specified on the command line are initialized.
 593   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
 594     std::set<std::string> unforceable_field_trials;
 595 #if defined(OFFICIAL_BUILD)
 596     unforceable_field_trials.insert("SettingsEnforcement");
 597 #endif  // defined(OFFICIAL_BUILD)
 598
 599     // Create field trials without activating them, so that this behaves in a
 600     // consistent manner with field trials created from the server.
 601     bool result = base::FieldTrialList::CreateTrialsFromString(
 602         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
 603         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 604         unforceable_field_trials);
 605     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
 606                   << " list specified.";
 607   }
 608   if (command_line->HasSwitch(switches::kForceVariationIds)) {
 609     // Create default variation ids which will always be included in the
 610     // X-Client-Data request header.
 611     variations::VariationsHttpHeaderProvider* provider =
 612         variations::VariationsHttpHeaderProvider::GetInstance();
 613     bool result = provider->SetDefaultVariationIds(
 614         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
 615     CHECK(result) << "Invalid --" << switches::kForceVariationIds
 616                   << " list specified.";
 617   }
 618   chrome_variations::VariationsService* variations_service =
 619       browser_process_->variations_service();
 620   if (variations_service)
 621     variations_service->CreateTrialsFromSeed();
 622
 623   // This must be called after |local_state_| is initialized.
 624   browser_field_trials_.SetupFieldTrials(
 625       base::Time::FromTimeT(metrics->GetInstallDate()), local_state_);
 626
 627   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
 628   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
 629   // Even though base::Bind does AddRef and Release, the object will not be
 630   // deleted after the Task is executed.
 631   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 632
 633   // Now that field trials have been created, initializes metrics recording.
 634   metrics->InitializeMetricsRecordingState();
 635 }
 636
 637 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 638
 639 void ChromeBrowserMainParts::StartMetricsRecording() {
 640   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
 641   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 642
 643   const bool only_do_metrics_recording =
 644       parsed_command_line_.HasSwitch(switches::kMetricsRecordingOnly) ||
 645       parsed_command_line_.HasSwitch(switches::kEnableBenchmarking);
 646   if (only_do_metrics_recording) {
 647     // If we're testing then we don't care what the user preference is, we turn
 648     // on recording, but not reporting, otherwise tests fail.
 649     metrics->StartRecordingForTests();
 650     return;
 651   }
 652
 653   metrics->CheckForClonedInstall(
 654       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
 655   const bool metrics_enabled = metrics->StartIfMetricsReportingEnabled();
 656   // TODO(asvitkine): Since this function is not run on Android, RAPPOR is
 657   // currently disabled there. http://crbug.com/370041
 658   browser_process_->rappor_service()->Start(
 659       browser_process_->local_state(),
 660       browser_process_->system_request_context(),
 661       metrics_enabled);
 662 }
 663
 664 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
 665   // Don't record any metrics if UI was displayed before this point e.g.
 666   // warning dialogs.
 667   if (startup_metric_utils::WasNonBrowserUIDisplayed())
 668     return;
 669
 670 #if defined(OS_ANDROID)
 671   // On Android the first run is handled in Java code, and the C++ side of
 672   // Chrome doesn't know if this is the first run. This will cause some
 673   // inaccuracy in the UMA statistics, but this should be minor (first runs are
 674   // rare).
 675   bool is_first_run = false;
 676 #else
 677   bool is_first_run = first_run::IsChromeFirstRun();
 678 #endif
 679
 680 // CurrentProcessInfo::CreationTime() is currently only implemented on some
 681 // platforms.
 682 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 683   const base::Time process_creation_time =
 684       base::CurrentProcessInfo::CreationTime();
 685
 686   if (!is_first_run && !process_creation_time.is_null()) {
 687     base::TimeDelta delay = base::Time::Now() - process_creation_time;
 688     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserMessageLoopStartTime", delay);
 689   }
 690 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 691
 692   // Record collected startup metrics.
 693   startup_metric_utils::OnBrowserStartupComplete(is_first_run);
 694
 695   // Deletes self.
 696   new LoadCompleteListener();
 697 }
 698
 699 // -----------------------------------------------------------------------------
 700 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 701
 702 #if defined(OS_WIN)
 703 #define DLLEXPORT __declspec(dllexport)
 704
 705 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
 706 extern "C" {
 707 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 708 }
 709
 710 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
 711   // Need an instance of AtExitManager to handle singleton creations and
 712   // deletions.  We need this new instance because, the old instance created
 713   // in ChromeMain() got destructed when the function returned.
 714   base::AtExitManager exit_manager;
 715   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 716 }
 717 #endif
 718
 719 // content::BrowserMainParts implementation ------------------------------------
 720
 721 void ChromeBrowserMainParts::PreEarlyInitialization() {
 722   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
 723   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 724     chrome_extra_parts_[i]->PreEarlyInitialization();
 725 }
 726
 727 void ChromeBrowserMainParts::PostEarlyInitialization() {
 728   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
 729   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 730     chrome_extra_parts_[i]->PostEarlyInitialization();
 731 }
 732
 733 void ChromeBrowserMainParts::ToolkitInitialized() {
 734   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
 735   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 736     chrome_extra_parts_[i]->ToolkitInitialized();
 737 }
 738
 739 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
 740   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
 741   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 742     chrome_extra_parts_[i]->PreMainMessageLoopStart();
 743 }
 744
 745 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
 746   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 747   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 748     chrome_extra_parts_[i]->PostMainMessageLoopStart();
 749 }
 750
 751 int ChromeBrowserMainParts::PreCreateThreads() {
 752   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
 753   result_code_ = PreCreateThreadsImpl();
 754
 755   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 756 #if !defined(OS_ANDROID)
 757     // These members must be initialized before exiting this function normally.
 758     DCHECK(master_prefs_.get());
 759     DCHECK(browser_creator_.get());
 760 #endif
 761     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 762       chrome_extra_parts_[i]->PreCreateThreads();
 763   }
 764
 765   return result_code_;
 766 }
 767
 768 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
 769   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
 770   run_message_loop_ = false;
 771 #if !defined(OS_ANDROID)
 772   chrome::MaybeShowInvalidUserDataDirWarningDialog();
 773 #endif
 774   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
 775     return chrome::RESULT_CODE_MISSING_DATA;
 776
 777   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
 778   MediaCaptureDevicesDispatcher::GetInstance();
 779
 780   // Android's first run is done in Java instead of native.
 781 #if !defined(OS_ANDROID)
 782   process_singleton_.reset(new ChromeProcessSingleton(
 783       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
 784
 785   // Cache first run state early.
 786   first_run::IsChromeFirstRun();
 787 #endif
 788
 789   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
 790       JsonPrefStore::GetTaskRunnerForFile(
 791           base::FilePath(chrome::kLocalStorePoolName),
 792           BrowserThread::GetBlockingPool());
 793
 794   {
 795     TRACE_EVENT0("startup",
 796       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
 797     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
 798                                                   parsed_command_line()));
 799   }
 800
 801   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
 802     TRACE_EVENT0("startup",
 803         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
 804     // User wants to override default tracking status.
 805     std::string flag =
 806       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
 807     // Default to basic profiling (no parent child support).
 808     tracked_objects::ThreadData::Status status =
 809           tracked_objects::ThreadData::PROFILING_ACTIVE;
 810     if (flag.compare("0") != 0)
 811       status = tracked_objects::ThreadData::DEACTIVATED;
 812     else if (flag.compare("child") != 0)
 813       status = tracked_objects::ThreadData::PROFILING_CHILDREN_ACTIVE;
 814     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
 815   }
 816
 817   if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
 818     tracking_objects_.set_output_file_path(
 819         parsed_command_line().GetSwitchValuePath(
 820             switches::kProfilingOutputFile));
 821   }
 822
 823   local_state_ = InitializeLocalState(
 824       local_state_task_runner.get(), parsed_command_line());
 825
 826 #if !defined(OS_ANDROID)
 827   // These members must be initialized before returning from this function.
 828   master_prefs_.reset(new first_run::MasterPrefs);
 829   // Android doesn't use StartupBrowserCreator.
 830   browser_creator_.reset(new StartupBrowserCreator);
 831   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
 832   chrome::UMABrowsingActivityObserver::Init();
 833 #endif
 834
 835 #if !defined(OS_CHROMEOS)
 836   // Convert active labs into switches. This needs to be done before
 837   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
 838   // affected by experiment flags (--touch-optimized-ui in particular).
 839   // On ChromeOS system level flags are applied from the device settings from
 840   // the session manager.
 841   {
 842     TRACE_EVENT0("startup",
 843         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
 844     about_flags::PrefServiceFlagsStorage flags_storage_(
 845         g_browser_process->local_state());
 846     about_flags::ConvertFlagsToSwitches(&flags_storage_,
 847                                         CommandLine::ForCurrentProcess(),
 848                                         about_flags::kAddSentinels);
 849   }
 850 #endif
 851
 852   local_state_->UpdateCommandLinePrefStore(
 853       new CommandLinePrefStore(CommandLine::ForCurrentProcess()));
 854
 855   // Reset the command line in the crash report details, since we may have
 856   // just changed it to include experiments.
 857   crash_keys::SetSwitchesFromCommandLine(CommandLine::ForCurrentProcess());
 858
 859   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
 860   // needed when loading the MainMenu.nib and the language doesn't depend on
 861   // anything since it comes from Cocoa.
 862 #if defined(OS_MACOSX)
 863   std::string locale =
 864       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
 865   browser_process_->SetApplicationLocale(locale);
 866 #else
 867   const std::string locale =
 868       local_state_->GetString(prefs::kApplicationLocale);
 869
 870   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
 871   // method InitSharedInstance is ignored.
 872
 873   TRACE_EVENT_BEGIN0("startup",
 874       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 875   const std::string loaded_locale =
 876       ui::ResourceBundle::InitSharedInstanceWithLocale(
 877           locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 878   TRACE_EVENT_END0("startup",
 879       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 880
 881   if (loaded_locale.empty() &&
 882       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
 883     ShowMissingLocaleMessageBox();
 884     return chrome::RESULT_CODE_MISSING_DATA;
 885   }
 886   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
 887   browser_process_->SetApplicationLocale(loaded_locale);
 888
 889   base::FilePath resources_pack_path;
 890   PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 891   {
 892     TRACE_EVENT0("startup",
 893         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
 894     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 895         resources_pack_path, ui::SCALE_FACTOR_NONE);
 896   }
 897 #endif  // defined(OS_MACOSX)
 898
 899   // Android does first run in Java instead of native.
 900   // Chrome OS has its own out-of-box-experience code.
 901 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 902   // On first run, we need to process the predictor preferences before the
 903   // browser's profile_manager object is created, but after ResourceBundle
 904   // is initialized.
 905   if (first_run::IsChromeFirstRun()) {
 906     first_run::ProcessMasterPreferencesResult pmp_result =
 907         first_run::ProcessMasterPreferences(user_data_dir_,
 908                                             master_prefs_.get());
 909     if (pmp_result == first_run::EULA_EXIT_NOW)
 910       return chrome::RESULT_CODE_EULA_REFUSED;
 911
 912     if (!parsed_command_line().HasSwitch(switches::kApp) &&
 913         !parsed_command_line().HasSwitch(switches::kAppId) &&
 914         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
 915       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
 916     }
 917
 918     // TODO(macourteau): refactor preferences that are copied from
 919     // master_preferences into local_state, as a "local_state" section in
 920     // master preferences. If possible, a generic solution would be preferred
 921     // over a copy one-by-one of specific preferences. Also see related TODO
 922     // in first_run.h.
 923
 924     // Store the initial VariationsService seed in local state, if it exists
 925     // in master prefs.
 926     if (!master_prefs_->variations_seed.empty()) {
 927       local_state_->SetString(prefs::kVariationsSeed,
 928                               master_prefs_->variations_seed);
 929       if (!master_prefs_->variations_seed_signature.empty()) {
 930         local_state_->SetString(prefs::kVariationsSeedSignature,
 931                                 master_prefs_->variations_seed_signature);
 932       }
 933       // Set the variation seed date to the current system time. If the user's
 934       // clock is incorrect, this may cause some field trial expiry checks to
 935       // not do the right thing until the next seed update from the server,
 936       // when this value will be updated.
 937       local_state_->SetInt64(prefs::kVariationsSeedDate,
 938                              base::Time::Now().ToInternalValue());
 939     }
 940
 941     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
 942       local_state_->SetString(
 943           prefs::kBrowserSuppressDefaultBrowserPrompt,
 944           master_prefs_->suppress_default_browser_prompt_for_version);
 945     }
 946
 947     AppListService::Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->HandleFirstRun();
 948   }
 949 #endif
 950
 951 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
 952   // Set the product channel for crash reports.
 953   base::debug::SetCrashKeyValue(crash_keys::kChannel,
 954       chrome::VersionInfo::GetVersionStringModifier());
 955 #endif
 956
 957   // Initialize tracking synchronizer system.
 958   tracking_synchronizer_ = new chrome_browser_metrics::TrackingSynchronizer();
 959
 960 #if defined(OS_MACOSX)
 961   // Get the Keychain API to register for distributed notifications on the main
 962   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
 963   // which doesn't. This ensures those notifications will get delivered
 964   // properly. See issue 37766.
 965   // (Note that the callback mask here is empty. I don't want to register for
 966   // any callbacks, I just want to initialize the mechanism.)
 967   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
 968 #endif
 969
 970 #if defined(OS_CHROMEOS)
 971   // Must be done after g_browser_process is constructed, before
 972   // SetupMetricsAndFieldTrials().
 973   chromeos::CrosSettings::Initialize();
 974 #endif
 975
 976   // Now the command line has been mutated based on about:flags, we can setup
 977   // metrics and initialize field trials. The field trials are needed by
 978   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
 979   SetupMetricsAndFieldTrials();
 980
 981   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
 982   browser_process_->PreCreateThreads();
 983
 984   return content::RESULT_CODE_NORMAL_EXIT;
 985 }
 986
 987 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
 988   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
 989   result_code_ = PreMainMessageLoopRunImpl();
 990
 991   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 992     chrome_extra_parts_[i]->PreMainMessageLoopRun();
 993 }
 994
 995 // PreMainMessageLoopRun calls these extra stages in the following order:
 996 //  PreMainMessageLoopRunImpl()
 997 //   ... initial setup, including browser_process_ setup.
 998 //   PreProfileInit()
 999 //   ... additional setup, including CreateProfile()
1000 //   PostProfileInit()
1001 //   ... additional setup
1002 //   PreBrowserStart()
1003 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
1004 //   PostBrowserStart()
1005
1006 void ChromeBrowserMainParts::PreProfileInit() {
1007   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
1008
1009   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1010     chrome_extra_parts_[i]->PreProfileInit();
1011
1012 #if !defined(OS_ANDROID)
1013   // Initialize the feedback uploader so it can setup notifications for profile
1014   // creation.
1015   feedback::FeedbackProfileObserver::Initialize();
1016
1017   ProfileManager* profile_manager = g_browser_process->profile_manager();
1018
1019   // First check if any ephemeral profiles are left behind because of browser
1020   // crash and schedule them for deletion and then proceed with getting the set
1021   // of profiles to open.
1022   ProfileInfoCache& profile_cache = profile_manager->GetProfileInfoCache();
1023   size_t profiles_count = profile_cache.GetNumberOfProfiles();
1024   std::vector<base::FilePath> profiles_to_delete;
1025   for (size_t i = 0; i < profiles_count; ++i) {
1026     if (profile_cache.ProfileIsEphemeralAtIndex(i))
1027       profiles_to_delete.push_back(profile_cache.GetPathOfProfileAtIndex(i));
1028   }
1029
1030   if (profiles_to_delete.size()) {
1031     for (size_t i = 0; i < profiles_to_delete.size(); ++i) {
1032       profile_manager->ScheduleProfileForDeletion(
1033           profiles_to_delete[i], ProfileManager::CreateCallback());
1034     }
1035     // Clean up stale profiles immediately after browser start.
1036     BrowserThread::PostTask(
1037         BrowserThread::FILE, FROM_HERE,
1038         base::Bind(&ProfileManager::CleanUpStaleProfiles, profiles_to_delete));
1039   }
1040 #endif  // OS_ANDROID
1041 }
1042
1043 void ChromeBrowserMainParts::PostProfileInit() {
1044   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
1045   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
1046   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1047     chrome_extra_parts_[i]->PostProfileInit();
1048 }
1049
1050 void ChromeBrowserMainParts::PreBrowserStart() {
1051   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
1052   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1053     chrome_extra_parts_[i]->PreBrowserStart();
1054
1055   three_d_observer_.reset(new ThreeDAPIObserver());
1056 }
1057
1058 void ChromeBrowserMainParts::PostBrowserStart() {
1059   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
1060   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1061     chrome_extra_parts_[i]->PostBrowserStart();
1062 #if !defined(OS_ANDROID)
1063   // Allow ProcessSingleton to process messages.
1064   process_singleton_->Unlock();
1065 #endif
1066 #if defined(ENABLE_WEBRTC)
1067   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
1068   // to reduce the impact on startup time.
1069   BrowserThread::PostDelayedTask(
1070       BrowserThread::UI,
1071       FROM_HERE,
1072       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
1073       base::TimeDelta::FromMinutes(1));
1074 #endif
1075 }
1076
1077 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
1078   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1079   // Android updates the metrics service dynamically depending on whether the
1080   // application is in the foreground or not. Do not start here.
1081 #if !defined(OS_ANDROID)
1082   // Now that the file thread has been started, start recording.
1083   StartMetricsRecording();
1084 #endif
1085
1086   // Create watchdog thread after creating all other threads because it will
1087   // watch the other threads and they must be running.
1088   browser_process_->watchdog_thread();
1089
1090   // Do any initializating in the browser process that requires all threads
1091   // running.
1092   browser_process_->PreMainMessageLoopRun();
1093
1094   // Record last shutdown time into a histogram.
1095   browser_shutdown::ReadLastShutdownInfo();
1096
1097 #if defined(OS_WIN)
1098   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
1099   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
1100   // upgrade/uninstall happen separately.
1101   bool already_running = browser_util::IsBrowserAlreadyRunning();
1102
1103   // If the command line specifies 'uninstall' then we need to work here
1104   // unless we detect another chrome browser running.
1105   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
1106     return DoUninstallTasks(already_running);
1107   }
1108
1109   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
1110       parsed_command_line().HasSwitch(switches::kShowIcons)) {
1111     return ChromeBrowserMainPartsWin::HandleIconsCommands(
1112         parsed_command_line_);
1113   }
1114
1115   ui::SelectFileDialog::SetFactory(new ChromeSelectFileDialogFactory(
1116       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
1117 #endif
1118
1119   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
1120     return ShellIntegration::SetAsDefaultBrowser() ?
1121         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
1122         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
1123   }
1124
1125 #if defined(USE_AURA)
1126   // Make sure aura::Env has been initialized.
1127   CHECK(aura::Env::GetInstance());
1128 #endif
1129
1130   // Android doesn't support extensions and doesn't implement ProcessSingleton.
1131 #if !defined(OS_ANDROID)
1132   // If the command line specifies --pack-extension, attempt the pack extension
1133   // startup action and exit.
1134   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
1135     extensions::StartupHelper extension_startup_helper;
1136     if (extension_startup_helper.PackExtension(parsed_command_line()))
1137       return content::RESULT_CODE_NORMAL_EXIT;
1138     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
1139   }
1140
1141   // If we're being launched just to check the connector policy, we are
1142   // short-lived and don't want to be passing that switch off.
1143   bool pass_command_line = !parsed_command_line().HasSwitch(
1144       switches::kCheckCloudPrintConnectorPolicy);
1145
1146   if (pass_command_line) {
1147     // When another process is running, use that process instead of starting a
1148     // new one. NotifyOtherProcess will currently give the other process up to
1149     // 20 seconds to respond. Note that this needs to be done before we attempt
1150     // to read the profile.
1151     notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
1152     switch (notify_result_) {
1153       case ProcessSingleton::PROCESS_NONE:
1154         // No process already running, fall through to starting a new one.
1155         break;
1156
1157       case ProcessSingleton::PROCESS_NOTIFIED:
1158 #if defined(OS_POSIX) && !defined(OS_MACOSX)
1159         printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
1160             l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
1161 #endif
1162         // Having a differentiated return type for testing allows for tests to
1163         // verify proper handling of some switches. When not testing, stick to
1164         // the standard Unix convention of returning zero when things went as
1165         // expected.
1166         if (parsed_command_line().HasSwitch(switches::kTestType))
1167           return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
1168         return content::RESULT_CODE_NORMAL_EXIT;
1169
1170       case ProcessSingleton::PROFILE_IN_USE:
1171         return chrome::RESULT_CODE_PROFILE_IN_USE;
1172
1173       case ProcessSingleton::LOCK_ERROR:
1174         LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
1175                       "directory. This means that running multiple instances "
1176                       "would start multiple browser processes rather than "
1177                       "opening a new window in the existing process. Aborting "
1178                       "now to avoid profile corruption.";
1179         return chrome::RESULT_CODE_PROFILE_IN_USE;
1180
1181       default:
1182         NOTREACHED();
1183     }
1184   }
1185 #endif  // !defined(OS_ANDROID)
1186
1187   // Handle special early return paths (which couldn't be processed even earlier
1188   // as they require the process singleton to be held) first.
1189
1190   std::string try_chrome =
1191       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
1192   if (!try_chrome.empty()) {
1193 #if defined(OS_WIN)
1194     // Setup.exe has determined that we need to run a retention experiment
1195     // and has lauched chrome to show the experiment UI. It is guaranteed that
1196     // no other Chrome is currently running as the process singleton was
1197     // sucessfully grabbed above.
1198     int try_chrome_int;
1199     base::StringToInt(try_chrome, &try_chrome_int);
1200     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
1201         try_chrome_int,
1202         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
1203                    base::Unretained(process_singleton_.get())));
1204     if (answer == TryChromeDialogView::NOT_NOW)
1205       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
1206     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
1207       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
1208     // At this point the user is willing to try chrome again.
1209     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
1210       // Only set in the unattended case, the interactive case is Windows 8.
1211       if (ShellIntegration::CanSetAsDefaultBrowser() ==
1212           ShellIntegration::SET_DEFAULT_UNATTENDED)
1213         ShellIntegration::SetAsDefaultBrowser();
1214     }
1215 #else
1216     // We don't support retention experiments on Mac or Linux.
1217     return content::RESULT_CODE_NORMAL_EXIT;
1218 #endif  // defined(OS_WIN)
1219   }
1220
1221 #if defined(OS_WIN)
1222   // Do the tasks if chrome has been upgraded while it was last running.
1223   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
1224     return content::RESULT_CODE_NORMAL_EXIT;
1225
1226   // Check if there is any machine level Chrome installed on the current
1227   // machine. If yes and the current Chrome process is user level, we do not
1228   // allow the user level Chrome to run. So we notify the user and uninstall
1229   // user level Chrome.
1230   // Note this check needs to happen here (after the process singleton was
1231   // obtained but before potentially creating the first run sentinel).
1232   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
1233     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
1234 #endif  // defined(OS_WIN)
1235
1236 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1237   if (sxs_linux::ShouldMigrateUserDataDir())
1238     return sxs_linux::MigrateUserDataDir();
1239 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1240
1241   // Desktop construction occurs here, (required before profile creation).
1242   PreProfileInit();
1243
1244   // Profile creation ----------------------------------------------------------
1245
1246   metrics::MetricsService::SetExecutionPhase(
1247       metrics::MetricsService::CREATE_PROFILE,
1248       g_browser_process->local_state());
1249   profile_ = CreatePrimaryProfile(parameters(),
1250                                   user_data_dir_,
1251                                   parsed_command_line());
1252   if (!profile_)
1253     return content::RESULT_CODE_NORMAL_EXIT;
1254
1255 #if !defined(OS_ANDROID)
1256   // The first run sentinel must be created after the process singleton was
1257   // grabbed and no early return paths were otherwise hit above.
1258   first_run::CreateSentinelIfNeeded();
1259 #endif  // !defined(OS_ANDROID)
1260
1261 #if defined(ENABLE_BACKGROUND)
1262   // Autoload any profiles which are running background apps.
1263   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
1264   browser_process_->profile_manager()->AutoloadProfiles();
1265 #endif
1266   // Post-profile init ---------------------------------------------------------
1267
1268   TranslateService::Initialize();
1269
1270   // Needs to be done before PostProfileInit, since login manager on CrOS is
1271   // called inside PostProfileInit.
1272   content::WebUIControllerFactory::RegisterFactory(
1273       ChromeWebUIControllerFactory::GetInstance());
1274
1275   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
1276   // So make sure to create it before that.
1277 #if !defined(DISABLE_NACL)
1278   NaClBrowserDelegateImpl* delegate =
1279       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
1280   nacl::NaClBrowser::SetDelegate(delegate);
1281 #endif
1282
1283   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
1284   // (requires supporting early exit).
1285   PostProfileInit();
1286
1287   // Retrieve cached GL strings from local state and use them for GPU
1288   // blacklist decisions.
1289   if (g_browser_process->gl_string_manager())
1290     g_browser_process->gl_string_manager()->Initialize();
1291
1292   // Create an instance of GpuModeManager to watch gpu mode pref change.
1293   g_browser_process->gpu_mode_manager();
1294
1295 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1296   // Show the First Run UI if this is the first time Chrome has been run on
1297   // this computer, or we're being compelled to do so by a command line flag.
1298   // Note that this be done _after_ the PrefService is initialized and all
1299   // preferences are registered, since some of the code that the importer
1300   // touches reads preferences.
1301   if (first_run::IsChromeFirstRun()) {
1302     first_run::AutoImport(profile_,
1303                           master_prefs_->homepage_defined,
1304                           master_prefs_->do_import_items,
1305                           master_prefs_->dont_import_items,
1306                           master_prefs_->import_bookmarks_path);
1307
1308     // Note: this can pop the first run consent dialog on linux.
1309     first_run::DoPostImportTasks(profile_,
1310                                  master_prefs_->make_chrome_default_for_user);
1311
1312     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
1313       browser_creator_->set_show_main_browser_window(
1314           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
1315     } else {
1316       browser_creator_->set_is_default_browser_dialog_suppressed(true);
1317     }
1318   }
1319 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1320
1321 #if defined(OS_WIN)
1322   // Sets things up so that if we crash from this point on, a dialog will
1323   // popup asking the user to restart chrome. It is done this late to avoid
1324   // testing against a bunch of special cases that are taken care early on.
1325   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
1326       parsed_command_line());
1327
1328   // Registers Chrome with the Windows Restart Manager, which will restore the
1329   // Chrome session when the computer is restarted after a system update.
1330   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
1331   // but should run on startup if extended to handle crashes/hangs/patches.
1332   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
1333   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
1334     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
1335         parsed_command_line());
1336   }
1337
1338   // Verify that the profile is not on a network share and if so prepare to show
1339   // notification to the user.
1340   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
1341     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
1342         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
1343                    profile_->GetPath()));
1344   }
1345 #endif  // OS_WIN
1346
1347 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1348   // Init the RLZ library. This just binds the dll and schedules a task on the
1349   // file thread to be run sometime later. If this is the first run we record
1350   // the installation event.
1351   PrefService* pref_service = profile_->GetPrefs();
1352   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
1353       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
1354   // Negative ping delay means to send ping immediately after a first search is
1355   // recorded.
1356   RLZTracker::InitRlzFromProfileDelayed(
1357       profile_, first_run::IsChromeFirstRun(), ping_delay < 0,
1358       base::TimeDelta::FromMilliseconds(abs(ping_delay)));
1359 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1360
1361   // Configure modules that need access to resources.
1362   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
1363
1364   // In unittest mode, this will do nothing.  In normal mode, this will create
1365   // the global IntranetRedirectDetector instance, which will promptly go to
1366   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
1367   // to see if it should do anything else.
1368   //
1369   // A simpler way of doing all this would be to have some function which could
1370   // give the time elapsed since startup, and simply have this object check that
1371   // when asked to initialize itself, but this doesn't seem to exist.
1372   //
1373   // This can't be created in the BrowserProcessImpl constructor because it
1374   // needs to read prefs that get set after that runs.
1375   browser_process_->intranet_redirect_detector();
1376   GoogleSearchCounter::RegisterForNotifications();
1377
1378   if (parsed_command_line().HasSwitch(switches::kEnableSdchOverHttps)) {
1379     net::SdchManager::EnableSecureSchemeSupport(true);
1380   } else {
1381     // Check SDCH field trial.
1382     const char kSdchFieldTrialName[] = "SDCH";
1383     const char kEnabledAllGroupName[] = "EnabledAll";
1384     const char kEnabledHttpOnlyGroupName[] = "EnabledHttpOnly";
1385     const char kDisabledAllGroupName[] = "DisabledAll";
1386
1387     // Store in a string on return to keep underlying storage for
1388     // StringPiece stable.
1389     std::string sdch_trial_group_string =
1390         base::FieldTrialList::FindFullName(kSdchFieldTrialName);
1391     base::StringPiece sdch_trial_group(sdch_trial_group_string);
1392     if (sdch_trial_group.starts_with(kEnabledAllGroupName)) {
1393       net::SdchManager::EnableSecureSchemeSupport(true);
1394       net::SdchManager::EnableSdchSupport(true);
1395     } else if (sdch_trial_group.starts_with(kEnabledHttpOnlyGroupName)) {
1396       net::SdchManager::EnableSdchSupport(true);
1397     } else if (sdch_trial_group.starts_with(kDisabledAllGroupName)) {
1398       net::SdchManager::EnableSdchSupport(false);
1399     }
1400   }
1401
1402 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
1403   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
1404     base::FilePath path =
1405         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
1406     printing::PrintedDocument::set_debug_dump_path(path);
1407   }
1408 #endif
1409
1410   HandleTestParameters(parsed_command_line());
1411   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
1412       base::debug::BeingDebugged());
1413
1414   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
1415       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
1416   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
1417       browser_process_->GetApplicationLocale());
1418
1419   // Start watching for hangs during startup. We disarm this hang detector when
1420   // ThreadWatcher takes over or when browser is shutdown or when
1421   // startup_watcher_ is deleted.
1422   metrics::MetricsService::SetExecutionPhase(
1423       metrics::MetricsService::STARTUP_TIMEBOMB_ARM,
1424       g_browser_process->local_state());
1425   startup_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1426
1427   // On mobile, need for clean shutdown arises only when the application comes
1428   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
1429   // http://crbug.com/179143
1430 #if !defined(OS_ANDROID)
1431   // Start watching for a hang.
1432   browser_process_->metrics_service()->LogNeedForCleanShutdown();
1433 #endif
1434
1435 #if defined(ENABLE_FULL_PRINTING)
1436   // Create the instance of the cloud print proxy service so that it can launch
1437   // the service process if needed. This is needed because the service process
1438   // might have shutdown because an update was available.
1439   // TODO(torne): this should maybe be done with
1440   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
1441   // instead?
1442   CloudPrintProxyServiceFactory::GetForProfile(profile_);
1443 #endif
1444
1445   // Start watching all browser threads for responsiveness.
1446   metrics::MetricsService::SetExecutionPhase(
1447       metrics::MetricsService::THREAD_WATCHER_START,
1448       g_browser_process->local_state());
1449   ThreadWatcherList::StartWatchingAll(parsed_command_line());
1450
1451 #if defined(OS_ANDROID)
1452   ThreadWatcherAndroid::RegisterApplicationStatusListener();
1453 #endif
1454
1455 #if !defined(DISABLE_NACL)
1456   BrowserThread::PostTask(
1457       BrowserThread::IO,
1458       FROM_HERE,
1459       base::Bind(nacl::NaClProcessHost::EarlyStartup));
1460 #endif
1461
1462   // Make sure initial prefs are recorded
1463   PrefMetricsService::Factory::GetForProfile(profile_);
1464
1465   PreBrowserStart();
1466
1467   // Instantiate the notification UI manager, as this triggers a perf timer
1468   // used to measure startup time. TODO(stevenjb): Figure out what is actually
1469   // triggering the timer and call that explicitly in the approprate place.
1470   // http://crbug.com/105065.
1471   browser_process_->notification_ui_manager();
1472
1473   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
1474     RegisterComponentsForUpdate();
1475
1476 #if defined(OS_ANDROID)
1477   chrome_variations::VariationsService* variations_service =
1478       browser_process_->variations_service();
1479   if (variations_service) {
1480     variations_service->set_policy_pref_service(profile_->GetPrefs());
1481     variations_service->StartRepeatedVariationsSeedFetch();
1482   }
1483   translate::TranslateDownloadManager::RequestLanguageList(
1484       profile_->GetPrefs());
1485
1486 #else
1487   // Most general initialization is behind us, but opening a
1488   // tab and/or session restore and such is still to be done.
1489   base::TimeTicks browser_open_start = base::TimeTicks::Now();
1490
1491   // We are in regular browser boot sequence. Open initial tabs and enter the
1492   // main message loop.
1493   int result_code;
1494 #if defined(OS_CHROMEOS)
1495   // On ChromeOS multiple profiles doesn't apply, and will break if we load
1496   // them this early as the cryptohome hasn't yet been mounted (which happens
1497   // only once we log in.
1498   std::vector<Profile*> last_opened_profiles;
1499 #else
1500   std::vector<Profile*> last_opened_profiles =
1501       g_browser_process->profile_manager()->GetLastOpenedProfiles();
1502 #endif
1503
1504   if (browser_creator_->Start(parsed_command_line(), base::FilePath(),
1505                               profile_, last_opened_profiles, &result_code)) {
1506 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1507     // Initialize autoupdate timer. Timer callback costs basically nothing
1508     // when browser is not in persistent mode, so it's OK to let it ride on
1509     // the main thread. This needs to be done here because we don't want
1510     // to start the timer when Chrome is run inside a test harness.
1511     browser_process_->StartAutoupdateTimer();
1512 #endif
1513
1514 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1515     // On Linux, the running exe will be updated if an upgrade becomes
1516     // available while the browser is running.  We need to save the last
1517     // modified time of the exe, so we can compare to determine if there is
1518     // an upgrade while the browser is kept alive by a persistent extension.
1519     upgrade_util::SaveLastModifiedTimeOfExe();
1520 #endif
1521
1522     // Record now as the last successful chrome start.
1523     GoogleUpdateSettings::SetLastRunTime();
1524
1525 #if defined(OS_MACOSX)
1526     // Call Recycle() here as late as possible, before going into the loop
1527     // because Start() will add things to it while creating the main window.
1528     if (parameters().autorelease_pool)
1529       parameters().autorelease_pool->Recycle();
1530 #endif
1531
1532     base::TimeDelta delay = base::TimeTicks::Now() - browser_open_start;
1533     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserOpenTabs", delay);
1534
1535     // If we're running tests (ui_task is non-null), then we don't want to
1536     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
1537     // RequestLanguageList
1538     if (parameters().ui_task == NULL) {
1539       // Request new variations seed information from server.
1540       chrome_variations::VariationsService* variations_service =
1541           browser_process_->variations_service();
1542       if (variations_service) {
1543         variations_service->StartRepeatedVariationsSeedFetch();
1544
1545 #if defined(OS_WIN)
1546         variations_service->StartGoogleUpdateRegistrySync();
1547 #endif
1548       }
1549
1550       translate::TranslateDownloadManager::RequestLanguageList(
1551           profile_->GetPrefs());
1552     }
1553
1554     run_message_loop_ = true;
1555   } else {
1556     run_message_loop_ = false;
1557   }
1558   browser_creator_.reset();
1559 #endif  // !defined(OS_ANDROID)
1560
1561 #if !defined(OS_ANDROID)
1562   process_power_collector_.reset(new ProcessPowerCollector);
1563   process_power_collector_->Initialize();
1564 #endif
1565
1566   PostBrowserStart();
1567
1568   if (parameters().ui_task) {
1569     parameters().ui_task->Run();
1570     delete parameters().ui_task;
1571     run_message_loop_ = false;
1572   }
1573 #if defined(OS_ANDROID)
1574   // We never run the C++ main loop on Android, since the UI thread message
1575   // loop is controlled by the OS, so this is as close as we can get to
1576   // the start of the main loop
1577   if (result_code_ <= 0) {
1578     RecordBrowserStartupTime();
1579   }
1580 #endif
1581   return result_code_;
1582 }
1583
1584 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
1585   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
1586 #if defined(OS_ANDROID)
1587   // Chrome on Android does not use default MessageLoop. It has its own
1588   // Android specific MessageLoop
1589   NOTREACHED();
1590   return true;
1591 #else
1592   // Set the result code set in PreMainMessageLoopRun or set above.
1593   *result_code = result_code_;
1594   if (!run_message_loop_)
1595     return true;  // Don't run the default message loop.
1596
1597   // These should be invoked as close to the start of the browser's
1598   // UI thread message loop as possible to get a stable measurement
1599   // across versions.
1600   RecordBrowserStartupTime();
1601
1602   DCHECK(base::MessageLoopForUI::IsCurrent());
1603   base::RunLoop run_loop;
1604
1605   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
1606
1607   metrics::MetricsService::SetExecutionPhase(
1608       metrics::MetricsService::MAIN_MESSAGE_LOOP_RUN,
1609       g_browser_process->local_state());
1610   run_loop.Run();
1611
1612   return true;
1613 #endif
1614 }
1615
1616 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
1617   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
1618 #if defined(OS_ANDROID)
1619   // Chrome on Android does not use default MessageLoop. It has its own
1620   // Android specific MessageLoop
1621   NOTREACHED();
1622 #else
1623
1624   // Start watching for jank during shutdown. It gets disarmed when
1625   // |shutdown_watcher_| object is destructed.
1626   metrics::MetricsService::SetExecutionPhase(
1627       metrics::MetricsService::SHUTDOWN_TIMEBOMB_ARM,
1628       g_browser_process->local_state());
1629   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1630
1631   // Disarm the startup hang detector time bomb if it is still Arm'ed.
1632   startup_watcher_->Disarm();
1633
1634   // Remove observers attached to D-Bus clients before DbusThreadManager is
1635   // shut down.
1636   process_power_collector_.reset();
1637
1638   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1639     chrome_extra_parts_[i]->PostMainMessageLoopRun();
1640
1641   // Some tests don't set parameters.ui_task, so they started translate
1642   // language fetch that was never completed so we need to cleanup here
1643   // otherwise it will be done by the destructor in a wrong thread.
1644   TranslateService::Shutdown(parameters().ui_task == NULL);
1645
1646   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
1647     process_singleton_->Cleanup();
1648
1649   // Stop all tasks that might run on WatchDogThread.
1650   ThreadWatcherList::StopWatchingAll();
1651
1652   browser_process_->metrics_service()->Stop();
1653
1654   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
1655   browser_process_->StartTearDown();
1656 #endif
1657 }
1658
1659 void ChromeBrowserMainParts::PostDestroyThreads() {
1660 #if defined(OS_ANDROID)
1661   // On Android, there is no quit/exit. So the browser's main message loop will
1662   // not finish.
1663   NOTREACHED();
1664 #else
1665   browser_process_->PostDestroyThreads();
1666   // browser_shutdown takes care of deleting browser_process, so we need to
1667   // release it.
1668   ignore_result(browser_process_.release());
1669   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
1670   master_prefs_.reset();
1671   process_singleton_.reset();
1672
1673   // We need to do this check as late as possible, but due to modularity, this
1674   // may be the last point in Chrome.  This would be more effective if done at
1675   // a higher level on the stack, so that it is impossible for an early return
1676   // to bypass this code.  Perhaps we need a *final* hook that is called on all
1677   // paths from content/browser/browser_main.
1678   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
1679
1680 #if defined(OS_CHROMEOS)
1681   chromeos::CrosSettings::Shutdown();
1682 #endif
1683 #endif
1684 }
1685
1686 // Public members:
1687
1688 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
1689   chrome_extra_parts_.push_back(parts);
1690 }