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