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/feature_list.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_macros.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/profiler/scoped_profile.h"
  28 #include "base/profiler/scoped_tracker.h"
  29 #include "base/run_loop.h"
  30 #include "base/strings/string_number_conversions.h"
  31 #include "base/strings/string_piece.h"
  32 #include "base/strings/string_split.h"
  33 #include "base/strings/sys_string_conversions.h"
  34 #include "base/strings/utf_string_conversions.h"
  35 #include "base/sys_info.h"
  36 #include "base/threading/platform_thread.h"
  37 #include "base/time/default_tick_clock.h"
  38 #include "base/time/time.h"
  39 #include "base/trace_event/trace_event.h"
  40 #include "base/values.h"
  41 #include "build/build_config.h"
  42 #include "cc/base/switches.h"
  43 #include "chrome/browser/about_flags.h"
  44 #include "chrome/browser/after_startup_task_utils.h"
  45 #include "chrome/browser/browser_process.h"
  46 #include "chrome/browser/browser_process_impl.h"
  47 #include "chrome/browser/browser_process_platform_part.h"
  48 #include "chrome/browser/browser_shutdown.h"
  49 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  50 #include "chrome/browser/component_updater/cld_component_installer.h"
  51 #include "chrome/browser/component_updater/ev_whitelist_component_installer.h"
  52 #include "chrome/browser/component_updater/flash_component_installer.h"
  53 #include "chrome/browser/component_updater/recovery_component_installer.h"
  54 #include "chrome/browser/component_updater/supervised_user_whitelist_installer.h"
  55 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
  56 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
  57 #include "chrome/browser/defaults.h"
  58 #include "chrome/browser/first_run/first_run.h"
  59 #include "chrome/browser/first_run/upgrade_util.h"
  60 #include "chrome/browser/gpu/gl_string_manager.h"
  61 #include "chrome/browser/gpu/three_d_api_observer.h"
  62 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  63 #include "chrome/browser/memory/oom_priority_manager.h"
  64 #include "chrome/browser/metrics/field_trial_synchronizer.h"
  65 #include "chrome/browser/metrics/metrics_services_manager.h"
  66 #include "chrome/browser/metrics/thread_watcher.h"
  67 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
  68 #include "chrome/browser/net/crl_set_fetcher.h"
  69 #include "chrome/browser/performance_monitor/performance_monitor.h"
  70 #include "chrome/browser/plugins/plugin_prefs.h"
  71 #include "chrome/browser/power/process_power_collector.h"
  72 #include "chrome/browser/pref_service_flags_storage.h"
  73 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  74 #include "chrome/browser/prefs/command_line_pref_store.h"
  75 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  76 #include "chrome/browser/prefs/pref_metrics_service.h"
  77 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
  78 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
  79 #include "chrome/browser/process_singleton.h"
  80 #include "chrome/browser/profiles/profile.h"
  81 #include "chrome/browser/profiles/profile_manager.h"
  82 #include "chrome/browser/profiles/profiles_state.h"
  83 #include "chrome/browser/shell_integration.h"
  84 #include "chrome/browser/tracing/navigation_tracing.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/channel_info.h"
  96 #include "chrome/common/chrome_constants.h"
  97 #include "chrome/common/chrome_paths.h"
  98 #include "chrome/common/chrome_result_codes.h"
  99 #include "chrome/common/chrome_switches.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/media/media_resource_provider.h"
 104 #include "chrome/common/net/net_resource_provider.h"
 105 #include "chrome/common/pref_names.h"
 106 #include "chrome/common/profiling.h"
 107 #include "chrome/common/variations/variations_util.h"
 108 #include "chrome/grit/generated_resources.h"
 109 #include "chrome/installer/util/google_update_settings.h"
 110 #include "components/component_updater/component_updater_service.h"
 111 #include "components/device_event_log/device_event_log.h"
 112 #include "components/google/core/browser/google_util.h"
 113 #include "components/language_usage_metrics/language_usage_metrics.h"
 114 #include "components/metrics/call_stack_profile_metrics_provider.h"
 115 #include "components/metrics/metrics_service.h"
 116 #include "components/metrics/profiler/tracking_synchronizer.h"
 117 #include "components/nacl/browser/nacl_browser.h"
 118 #include "components/rappor/rappor_service.h"
 119 #include "components/signin/core/common/profile_management_switches.h"
 120 #include "components/startup_metric_utils/startup_metric_utils.h"
 121 #include "components/tracing/tracing_switches.h"
 122 #include "components/translate/content/browser/browser_cld_utils.h"
 123 #include "components/translate/content/common/cld_data_source.h"
 124 #include "components/translate/core/browser/translate_download_manager.h"
 125 #include "components/variations/net/variations_http_header_provider.h"
 126 #include "components/variations/pref_names.h"
 127 #include "components/variations/service/variations_service.h"
 128 #include "components/variations/variations_associated_data.h"
 129 #include "components/variations/variations_switches.h"
 130 #include "components/version_info/version_info.h"
 131 #include "content/public/browser/browser_thread.h"
 132 #include "content/public/browser/notification_observer.h"
 133 #include "content/public/browser/notification_registrar.h"
 134 #include "content/public/browser/notification_service.h"
 135 #include "content/public/browser/notification_types.h"
 136 #include "content/public/browser/power_usage_monitor.h"
 137 #include "content/public/browser/site_instance.h"
 138 #include "content/public/common/content_client.h"
 139 #include "content/public/common/content_switches.h"
 140 #include "content/public/common/main_function_params.h"
 141 #include "grit/platform_locale_settings.h"
 142 #include "media/audio/audio_manager.h"
 143 #include "media/base/media_resources.h"
 144 #include "net/base/net_module.h"
 145 #include "net/cookies/cookie_monster.h"
 146 #include "net/http/http_network_layer.h"
 147 #include "net/http/http_stream_factory.h"
 148 #include "net/url_request/url_request.h"
 149 #include "ui/base/l10n/l10n_util.h"
 150 #include "ui/base/layout.h"
 151 #include "ui/base/resource/resource_bundle.h"
 152 #include "ui/strings/grit/app_locale_settings.h"
 153
 154 #if defined(OS_ANDROID)
 155 #include "chrome/browser/android/dev_tools_discovery_provider_android.h"
 156 #include "chrome/browser/metrics/thread_watcher_android.h"
 157 #include "ui/base/resource/resource_bundle_android.h"
 158 #else
 159 #include "chrome/browser/devtools/chrome_devtools_discovery_provider.h"
 160 #include "chrome/browser/feedback/feedback_profile_observer.h"
 161 #endif  // defined(OS_ANDROID)
 162
 163 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 164 #include "chrome/browser/first_run/upgrade_util_linux.h"
 165 #include "chrome/browser/sxs_linux.h"
 166 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
 167
 168 #if defined(OS_CHROMEOS)
 169 #include "chrome/browser/chromeos/settings/cros_settings.h"
 170 #include "chromeos/chromeos_switches.h"
 171 #include "chromeos/settings/cros_settings_names.h"
 172 #endif  // defined(OS_CHROMEOS)
 173
 174 // TODO(port): several win-only methods have been pulled out of this, but
 175 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 176 // other platforms. For now, it's just a stub. This is a serious work in
 177 // progress and should not be taken as an indication of a real refactoring.
 178
 179 #if defined(OS_WIN)
 180 #include "base/environment.h"  // For PreRead experiment.
 181 #include "base/trace_event/trace_event_etw_export_win.h"
 182 #include "base/win/windows_version.h"
 183 #include "chrome/browser/browser_util_win.h"
 184 #include "chrome/browser/chrome_browser_main_win.h"
 185 #include "chrome/browser/chrome_select_file_dialog_factory_win.h"
 186 #include "chrome/browser/component_updater/caps_installer_win.h"
 187 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 188 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 189 #include "chrome/browser/first_run/upgrade_util_win.h"
 190 #include "chrome/browser/ui/network_profile_bubble.h"
 191 #include "chrome/installer/util/helper.h"
 192 #include "chrome/installer/util/install_util.h"
 193 #include "chrome/installer/util/shell_util.h"
 194 #include "components/browser_watcher/exit_funnel_win.h"
 195 #include "net/base/net_util.h"
 196 #include "ui/base/l10n/l10n_util_win.h"
 197 #include "ui/gfx/win/dpi.h"
 198 #include "ui/shell_dialogs/select_file_dialog.h"
 199 #endif  // defined(OS_WIN)
 200
 201 #if defined(OS_MACOSX)
 202 #include <Security/Security.h>
 203
 204 #include "base/mac/scoped_nsautorelease_pool.h"
 205 #include "chrome/browser/mac/keystone_glue.h"
 206 #endif  // defined(OS_MACOSX)
 207
 208 #if !defined(OS_IOS)
 209 #include "chrome/browser/ui/app_modal/chrome_javascript_native_dialog_factory.h"
 210 #endif  // !defined(OS_IOS)
 211
 212 #if !defined(DISABLE_NACL)
 213 #include "chrome/browser/component_updater/pnacl_component_installer.h"
 214 #include "components/nacl/browser/nacl_process_host.h"
 215 #endif  // !defined(DISABLE_NACL)
 216
 217 #if defined(ENABLE_EXTENSIONS)
 218 #include "chrome/browser/extensions/startup_helper.h"
 219 #include "extensions/browser/extension_protocols.h"
 220 #include "extensions/common/features/feature_provider.h"
 221 #include "extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
 222 #endif  // defined(ENABLE_EXTENSIONS)
 223
 224 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 225 #include "printing/printed_document.h"
 226 #endif  // defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 227
 228 #if defined(ENABLE_RLZ)
 229 #include "chrome/browser/rlz/chrome_rlz_tracker_delegate.h"
 230 #include "components/rlz/rlz_tracker.h"
 231 #endif  // defined(ENABLE_RLZ)
 232
 233 #if defined(ENABLE_WEBRTC)
 234 #include "chrome/browser/media/webrtc_log_util.h"
 235 #endif  // defined(ENABLE_WEBRTC)
 236
 237 #if defined(USE_AURA)
 238 #include "ui/aura/env.h"
 239 #endif  // defined(USE_AURA)
 240
 241 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 242 #include "chrome/browser/chrome_webusb_browser_client.h"
 243 #include "components/webusb/webusb_detector.h"
 244 #endif
 245
 246 using content::BrowserThread;
 247
 248 namespace {
 249
 250 // This function provides some ways to test crash and assertion handling
 251 // behavior of the program.
 252 void HandleTestParameters(const base::CommandLine& command_line) {
 253   // This parameter causes a null pointer crash (crash reporter trigger).
 254   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
 255     int* bad_pointer = NULL;
 256     *bad_pointer = 0;
 257   }
 258 }
 259
 260 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 261 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
 262                         const std::vector<GURL>& new_tabs) {
 263   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
 264        it != new_tabs.end(); ++it) {
 265     if (it->is_valid())
 266       browser_creator->AddFirstRunTab(*it);
 267   }
 268 }
 269 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 270
 271 // Returns the new local state object, guaranteed non-NULL.
 272 // |local_state_task_runner| must be a shutdown-blocking task runner.
 273 PrefService* InitializeLocalState(
 274     base::SequencedTaskRunner* local_state_task_runner,
 275     const base::CommandLine& parsed_command_line) {
 276   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
 277
 278   // Load local state.  This includes the application locale so we know which
 279   // locale dll to load.  This also causes local state prefs to be registered.
 280   PrefService* local_state = g_browser_process->local_state();
 281   DCHECK(local_state);
 282
 283 #if defined(OS_WIN)
 284   if (first_run::IsChromeFirstRun()) {
 285     // During first run we read the google_update registry key to find what
 286     // language the user selected when downloading the installer. This
 287     // becomes our default language in the prefs.
 288     // Other platforms obey the system locale.
 289     base::string16 install_lang;
 290     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
 291       local_state->SetString(prefs::kApplicationLocale,
 292                              base::UTF16ToASCII(install_lang));
 293     }
 294   }
 295 #endif  // defined(OS_WIN)
 296
 297   // If the local state file for the current profile doesn't exist and the
 298   // parent profile command line flag is present, then we should inherit some
 299   // local state from the parent profile.
 300   // Checking that the local state file for the current profile doesn't exist
 301   // is the most robust way to determine whether we need to inherit or not
 302   // since the parent profile command line flag can be present even when the
 303   // current profile is not a new one, and in that case we do not want to
 304   // inherit and reset the user's setting.
 305   //
 306   // TODO(mnissler): We should probably just instantiate a
 307   // JSONPrefStore here instead of an entire PrefService. Once this is
 308   // addressed, the call to browser_prefs::RegisterLocalState can move
 309   // to chrome_prefs::CreateLocalState.
 310   if (parsed_command_line.HasSwitch(switches::kParentProfile)) {
 311     base::FilePath local_state_path;
 312     PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
 313     bool local_state_file_exists = base::PathExists(local_state_path);
 314     if (!local_state_file_exists) {
 315       base::FilePath parent_profile =
 316           parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
 317       scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
 318       scoped_ptr<PrefService> parent_local_state(
 319           chrome_prefs::CreateLocalState(
 320               parent_profile,
 321               local_state_task_runner,
 322               g_browser_process->policy_service(),
 323               registry,
 324               false));
 325       registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 326       // Right now, we only inherit the locale setting from the parent profile.
 327       local_state->SetString(
 328           prefs::kApplicationLocale,
 329           parent_local_state->GetString(prefs::kApplicationLocale));
 330     }
 331   }
 332
 333 #if defined(OS_CHROMEOS)
 334   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
 335     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
 336     // Ensure that we start with owner's locale.
 337     if (!owner_locale.empty() &&
 338         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
 339         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
 340       local_state->SetString(prefs::kApplicationLocale, owner_locale);
 341     }
 342   }
 343 #endif  // defined(OS_CHROMEOS)
 344
 345   return local_state;
 346 }
 347
 348 // Initializes the primary profile, possibly doing some user prompting to pick
 349 // a fallback profile. Returns the newly created profile, or NULL if startup
 350 // should not continue.
 351 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
 352                               const base::FilePath& user_data_dir,
 353                               const base::CommandLine& parsed_command_line) {
 354   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
 355   TRACK_SCOPED_REGION(
 356       "Startup", "ChromeBrowserMainParts::CreatePrimaryProfile");
 357
 358   base::Time start = base::Time::Now();
 359   if (profiles::IsMultipleProfilesEnabled() &&
 360       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
 361     profiles::SetLastUsedProfile(
 362         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
 363     // Clear kProfilesLastActive since the user only wants to launch a specific
 364     // profile.
 365     ListPrefUpdate update(g_browser_process->local_state(),
 366                           prefs::kProfilesLastActive);
 367     base::ListValue* profile_list = update.Get();
 368     profile_list->Clear();
 369   }
 370
 371   Profile* profile = NULL;
 372 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 373   // On ChromeOS and Android the ProfileManager will use the same path as the
 374   // one we got passed. GetActiveUserProfile will therefore use the correct path
 375   // automatically.
 376   DCHECK_EQ(user_data_dir.value(),
 377             g_browser_process->profile_manager()->user_data_dir().value());
 378   profile = ProfileManager::GetActiveUserProfile();
 379 #else
 380   base::FilePath profile_path =
 381       GetStartupProfilePath(user_data_dir, parsed_command_line);
 382
 383   // Without NewAvatarMenu, replace guest with any existing profile.
 384   if (!switches::IsNewAvatarMenu() &&
 385       profile_path == ProfileManager::GetGuestProfilePath()) {
 386     profile_path = g_browser_process->profile_manager()->GetProfileInfoCache().
 387         GetPathOfProfileAtIndex(0);
 388   }
 389   profile = g_browser_process->profile_manager()->GetProfile(
 390       profile_path);
 391
 392   // If we're using the --new-profile-management flag and this profile is
 393   // signed out, then we should show the user manager instead. By switching
 394   // the active profile to the guest profile we ensure that no
 395   // browser windows will be opened for the guest profile.
 396   if (switches::IsNewProfileManagement() &&
 397       profile &&
 398       !profile->IsGuestSession()) {
 399     ProfileInfoCache& cache =
 400         g_browser_process->profile_manager()->GetProfileInfoCache();
 401     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
 402
 403     if (profile_index != std::string::npos &&
 404         cache.ProfileIsSigninRequiredAtIndex(profile_index)) {
 405       profile = g_browser_process->profile_manager()->GetProfile(
 406           ProfileManager::GetGuestProfilePath());
 407     }
 408   }
 409 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID)
 410   if (profile) {
 411     UMA_HISTOGRAM_LONG_TIMES(
 412         "Startup.CreateFirstProfile", base::Time::Now() - start);
 413     return profile;
 414   }
 415
 416 #if !defined(OS_WIN)
 417   // TODO(port): fix this.  See comments near the definition of
 418   // user_data_dir.  It is better to CHECK-fail here than it is to
 419   // silently exit because of missing code in the above test.
 420   CHECK(profile) << "Cannot get default profile.";
 421 #endif  // !defined(OS_WIN)
 422
 423   return NULL;
 424 }
 425
 426 #if defined(OS_MACOSX)
 427 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
 428                           SecKeychainCallbackInfo* info, void* context) {
 429   return noErr;
 430 }
 431 #endif  // defined(OS_MACOSX)
 432
 433 void RegisterComponentsForUpdate() {
 434   component_updater::ComponentUpdateService* cus =
 435       g_browser_process->component_updater();
 436
 437   // Registration can be before or after cus->Start() so it is ok to post
 438   // a task to the UI thread to do registration once you done the necessary
 439   // file IO to know you existing component version.
 440 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 441   RegisterRecoveryComponent(cus, g_browser_process->local_state());
 442   RegisterPepperFlashComponent(cus);
 443   RegisterSwiftShaderComponent(cus);
 444   RegisterWidevineCdmComponent(cus);
 445 #endif  // !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 446
 447 #if !defined(DISABLE_NACL) && !defined(OS_ANDROID)
 448 #if defined(OS_CHROMEOS)
 449   // PNaCl on Chrome OS is on rootfs and there is no need to download it. But
 450   // Chrome4ChromeOS on Linux doesn't contain PNaCl so enable component
 451   // installer when running on Linux. See crbug.com/422121 for more details.
 452   if (!base::SysInfo::IsRunningOnChromeOS())
 453 #endif  // defined(OS_CHROMEOS)
 454     g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
 455 #endif  // !defined(DISABLE_NACL) && !defined(OS_ANDROID)
 456
 457   // Registration of the CLD Component is a no-op unless the CLD data source has
 458   // been configured to be the "Component" data source.
 459   RegisterCldComponent(cus);
 460
 461   component_updater::SupervisedUserWhitelistInstaller* whitelist_installer =
 462       g_browser_process->supervised_user_whitelist_installer();
 463   whitelist_installer->RegisterComponents();
 464
 465   base::FilePath path;
 466   if (PathService::Get(chrome::DIR_USER_DATA, &path)) {
 467 #if defined(OS_ANDROID)
 468     // The CRLSet component was enabled for some releases. This code attempts to
 469     // delete it from the local disk of those how may have downloaded it.
 470     g_browser_process->crl_set_fetcher()->DeleteFromDisk(path);
 471 #elif !defined(OS_CHROMEOS)
 472     // CRLSetFetcher attempts to load a CRL set from either the local disk or
 473     // network.
 474     // For Chrome OS this registration is delayed until user login.
 475     g_browser_process->crl_set_fetcher()->StartInitialLoad(cus, path);
 476     // Registration of the EV Whitelist component here is not necessary for:
 477     // 1. Android: Because it currently does not have the EV indicator.
 478     // 2. Chrome OS: On Chrome OS this registration is delayed until user login.
 479     RegisterEVWhitelistComponent(cus, path);
 480 #endif  // defined(OS_ANDROID)
 481   }
 482
 483 #if defined(OS_WIN)
 484 #if defined(GOOGLE_CHROME_BUILD)
 485   RegisterSwReporterComponent(cus);
 486 #endif  // defined(GOOGLE_CHROME_BUILD)
 487   RegisterCAPSComponent(cus);
 488 #endif  // defined(OS_WIN)
 489 }
 490
 491 #if !defined(OS_ANDROID)
 492 bool ProcessSingletonNotificationCallback(
 493     const base::CommandLine& command_line,
 494     const base::FilePath& current_directory) {
 495   // Drop the request if the browser process is already in shutdown path.
 496   if (!g_browser_process || g_browser_process->IsShuttingDown()) {
 497 #if defined(OS_WIN)
 498     browser_watcher::ExitFunnel::RecordSingleEvent(
 499         chrome::kBrowserExitCodesRegistryPath,
 500         L"ProcessSingletonIsShuttingDown");
 501 #endif  // defined(OS_WIN)
 502
 503     return false;
 504   }
 505
 506   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
 507     std::string start_time_string =
 508         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
 509     int64 remote_start_time;
 510     if (base::StringToInt64(start_time_string, &remote_start_time)) {
 511       base::TimeDelta elapsed =
 512           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
 513       if (command_line.HasSwitch(switches::kFastStart)) {
 514         UMA_HISTOGRAM_LONG_TIMES(
 515             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
 516       } else {
 517         UMA_HISTOGRAM_LONG_TIMES(
 518             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
 519       }
 520     }
 521   }
 522
 523   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
 524       command_line);
 525
 526   base::FilePath user_data_dir =
 527       g_browser_process->profile_manager()->user_data_dir();
 528   base::FilePath startup_profile_dir =
 529       GetStartupProfilePath(user_data_dir, command_line);
 530
 531   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
 532       command_line, current_directory, startup_profile_dir);
 533   return true;
 534 }
 535 #endif  // !defined(OS_ANDROID)
 536
 537 void LaunchDevToolsHandlerIfNeeded(const base::CommandLine& command_line) {
 538   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
 539     std::string port_str =
 540         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
 541     int port;
 542     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
 543       g_browser_process->CreateDevToolsHttpProtocolHandler(
 544           chrome::HOST_DESKTOP_TYPE_NATIVE,
 545           "127.0.0.1",
 546           static_cast<uint16>(port));
 547     } else {
 548       DLOG(WARNING) << "Invalid http debugger port number " << port;
 549     }
 550   }
 551 }
 552
 553 }  // namespace
 554
 555 namespace chrome_browser {
 556
 557 // This error message is not localized because we failed to load the
 558 // localization data files.
 559 #if defined(OS_WIN)
 560 const char kMissingLocaleDataTitle[] = "Missing File Error";
 561 #endif  // defined(OS_WIN)
 562
 563 #if defined(OS_WIN)
 564 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
 565 const char kMissingLocaleDataMessage[] =
 566     "Unable to find locale data files. Please reinstall.";
 567 #endif  // defined(OS_WIN)
 568
 569 }  // namespace chrome_browser
 570
 571 // BrowserMainParts ------------------------------------------------------------
 572
 573 ChromeBrowserMainParts::ChromeBrowserMainParts(
 574     const content::MainFunctionParams& parameters)
 575     : parameters_(parameters),
 576       parsed_command_line_(parameters.command_line),
 577       result_code_(content::RESULT_CODE_NORMAL_EXIT),
 578       startup_watcher_(new StartupTimeBomb()),
 579       shutdown_watcher_(new ShutdownWatcherHelper()),
 580       browser_field_trials_(parameters.command_line),
 581       sampling_profiler_(
 582           base::PlatformThread::CurrentId(),
 583           sampling_profiler_config_.GetSamplingParams(),
 584           metrics::CallStackProfileMetricsProvider::GetProfilerCallback(
 585               metrics::CallStackProfileMetricsProvider::Params(
 586                   metrics::CallStackProfileMetricsProvider::PROCESS_STARTUP,
 587                   false))),
 588       profile_(NULL),
 589       run_message_loop_(true),
 590       notify_result_(ProcessSingleton::PROCESS_NONE),
 591       local_state_(NULL),
 592       restart_last_session_(false) {
 593   if (sampling_profiler_config_.IsProfilerEnabled())
 594     sampling_profiler_.Start();
 595
 596   // If we're running tests (ui_task is non-null).
 597   if (parameters.ui_task)
 598     browser_defaults::enable_help_app = false;
 599
 600   // Chrome disallows cookies by default. All code paths that want to use
 601   // cookies need to go through one of Chrome's URLRequestContexts which have
 602   // a ChromeNetworkDelegate attached that selectively allows cookies again.
 603   net::URLRequest::SetDefaultCookiePolicyToBlock();
 604 }
 605
 606 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
 607   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
 608     delete chrome_extra_parts_[i];
 609   chrome_extra_parts_.clear();
 610 }
 611
 612 // This will be called after the command-line has been mutated by about:flags
 613 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
 614   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
 615   // Must initialize metrics after labs have been converted into switches,
 616   // but before field trials are set up (so that client ID is available for
 617   // one-time randomized field trials).
 618
 619   // Initialize FieldTrialList to support FieldTrials that use one-time
 620   // randomization.
 621   metrics::MetricsService* metrics = browser_process_->metrics_service();
 622   field_trial_list_.reset(
 623       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
 624
 625   const base::CommandLine* command_line =
 626       base::CommandLine::ForCurrentProcess();
 627   if (command_line->HasSwitch(switches::kEnableBenchmarking) ||
 628       command_line->HasSwitch(cc::switches::kEnableGpuBenchmarking)) {
 629     base::FieldTrial::EnableBenchmarking();
 630   }
 631
 632   if (command_line->HasSwitch(switches::kForceFieldTrialParams)) {
 633     bool result = chrome_variations::AssociateParamsFromString(
 634         command_line->GetSwitchValueASCII(switches::kForceFieldTrialParams));
 635     CHECK(result) << "Invalid --" << switches::kForceFieldTrialParams
 636                   << " list specified.";
 637   }
 638
 639   // Ensure any field trials specified on the command line are initialized.
 640   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
 641     std::set<std::string> unforceable_field_trials;
 642 #if defined(OFFICIAL_BUILD)
 643     unforceable_field_trials.insert("SettingsEnforcement");
 644 #endif  // defined(OFFICIAL_BUILD)
 645
 646     // Create field trials without activating them, so that this behaves in a
 647     // consistent manner with field trials created from the server.
 648     bool result = base::FieldTrialList::CreateTrialsFromString(
 649         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
 650         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 651         unforceable_field_trials);
 652     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
 653                   << " list specified.";
 654   }
 655
 656 #if defined(FIELDTRIAL_TESTING_ENABLED)
 657   if (!command_line->HasSwitch(switches::kDisableFieldTrialTestingConfig) &&
 658       !command_line->HasSwitch(switches::kForceFieldTrials) &&
 659       !command_line->HasSwitch(variations::switches::kVariationsServerURL))
 660     chrome_variations::AssociateDefaultFieldTrialConfig();
 661 #endif  // defined(FIELDTRIAL_TESTING_ENABLED)
 662
 663   if (command_line->HasSwitch(switches::kForceVariationIds)) {
 664     // Create default variation ids which will always be included in the
 665     // X-Client-Data request header.
 666     variations::VariationsHttpHeaderProvider* provider =
 667         variations::VariationsHttpHeaderProvider::GetInstance();
 668     bool result = provider->SetDefaultVariationIds(
 669         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
 670     CHECK(result) << "Invalid --" << switches::kForceVariationIds
 671                   << " list specified.";
 672     metrics->AddSyntheticTrialObserver(provider);
 673   }
 674
 675   scoped_ptr<base::FeatureList> feature_list(new base::FeatureList);
 676   feature_list->InitializeFromCommandLine(
 677       command_line->GetSwitchValueASCII(switches::kEnableFeatures),
 678       command_line->GetSwitchValueASCII(switches::kDisableFeatures));
 679
 680   variations::VariationsService* variations_service =
 681       browser_process_->variations_service();
 682   if (variations_service)
 683     variations_service->CreateTrialsFromSeed();
 684
 685   // TODO(asvitkine): Pass |feature_list| to CreateTrialsFromSeed() above.
 686   base::FeatureList::SetInstance(feature_list.Pass());
 687
 688   // This must be called after |local_state_| is initialized.
 689   browser_field_trials_.SetupFieldTrials();
 690
 691   // Enable Navigation Tracing only if a trace upload url is specified.
 692   if (command_line->HasSwitch(switches::kEnableNavigationTracing) &&
 693       command_line->HasSwitch(switches::kTraceUploadURL)) {
 694     tracing::SetupNavigationTracing();
 695   }
 696
 697   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
 698   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
 699   // Even though base::Bind does AddRef and Release, the object will not be
 700   // deleted after the Task is executed.
 701   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 702
 703   // Now that field trials have been created, initializes metrics recording.
 704   metrics->InitializeMetricsRecordingState();
 705
 706   const version_info::Channel channel = chrome::GetChannel();
 707
 708   // TODO(dalecurtis): Remove these checks and enable for all channels once we
 709   // track down the root causes of crbug.com/422522 and crbug.com/478932.
 710   if (channel == version_info::Channel::UNKNOWN ||
 711       channel == version_info::Channel::CANARY ||
 712       channel == version_info::Channel::DEV) {
 713     media::AudioManager::EnableHangMonitor();
 714   }
 715
 716   // Enable profiler instrumentation depending on the channel.
 717   switch (channel) {
 718     case version_info::Channel::UNKNOWN:
 719     case version_info::Channel::CANARY:
 720       tracked_objects::ScopedTracker::Enable();
 721       break;
 722
 723     case version_info::Channel::DEV:
 724     case version_info::Channel::BETA:
 725     case version_info::Channel::STABLE:
 726       // Don't enable instrumentation.
 727       break;
 728   }
 729
 730   // Register a synthetic field trial for the sampling profiler configuration
 731   // that was already chosen.
 732   sampling_profiler_config_.RegisterSyntheticFieldTrial();
 733 }
 734
 735 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 736
 737 void ChromeBrowserMainParts::StartMetricsRecording() {
 738   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
 739
 740   g_browser_process->metrics_service()->CheckForClonedInstall(
 741       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
 742
 743   g_browser_process->GetMetricsServicesManager()->UpdateUploadPermissions(true);
 744 }
 745
 746 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
 747   // Don't record any metrics if UI was displayed before this point e.g.
 748   // warning dialogs.
 749   if (startup_metric_utils::WasNonBrowserUIDisplayed())
 750     return;
 751
 752   bool is_first_run = false;
 753 #if !defined(OS_ANDROID)
 754   // On Android, first run is handled in Java code, and the C++ side of Chrome
 755   // doesn't know if this is the first run. This will cause some inaccuracy in
 756   // the UMA statistics, but this should be minor (first runs are rare).
 757   is_first_run = first_run::IsChromeFirstRun();
 758 #endif  // defined(OS_ANDROID)
 759
 760   // Record collected startup metrics.
 761   startup_metric_utils::RecordBrowserMainMessageLoopStart(base::Time::Now(),
 762                                                           is_first_run);
 763 }
 764
 765 // -----------------------------------------------------------------------------
 766 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 767
 768 #if defined(OS_WIN)
 769 #define DLLEXPORT __declspec(dllexport)
 770
 771 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
 772 extern "C" {
 773 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 774 }
 775
 776 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
 777   // Need an instance of AtExitManager to handle singleton creations and
 778   // deletions.  We need this new instance because, the old instance created
 779   // in ChromeMain() got destructed when the function returned.
 780   base::AtExitManager exit_manager;
 781   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 782 }
 783 #endif
 784
 785 // content::BrowserMainParts implementation ------------------------------------
 786
 787 void ChromeBrowserMainParts::PreEarlyInitialization() {
 788   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
 789   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 790     chrome_extra_parts_[i]->PreEarlyInitialization();
 791 }
 792
 793 void ChromeBrowserMainParts::PostEarlyInitialization() {
 794   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
 795   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 796     chrome_extra_parts_[i]->PostEarlyInitialization();
 797 }
 798
 799 void ChromeBrowserMainParts::ToolkitInitialized() {
 800   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
 801   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 802     chrome_extra_parts_[i]->ToolkitInitialized();
 803 }
 804
 805 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
 806   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
 807
 808   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 809     chrome_extra_parts_[i]->PreMainMessageLoopStart();
 810 }
 811
 812 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
 813   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 814
 815   // device_event_log must be initialized after the message loop. Calls to
 816   // {DEVICE}_LOG prior to here will only be logged with VLOG. Some
 817   // platforms (e.g. chromeos) may have already initialized this.
 818   if (!device_event_log::IsInitialized())
 819     device_event_log::Initialize(0 /* default max entries */);
 820
 821   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 822     chrome_extra_parts_[i]->PostMainMessageLoopStart();
 823 }
 824
 825 int ChromeBrowserMainParts::PreCreateThreads() {
 826   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
 827   result_code_ = PreCreateThreadsImpl();
 828
 829   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 830 #if !defined(OS_ANDROID)
 831     // These members must be initialized before exiting this function normally.
 832     DCHECK(master_prefs_.get());
 833     DCHECK(browser_creator_.get());
 834 #endif  // !defined(OS_ANDROID)
 835     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 836       chrome_extra_parts_[i]->PreCreateThreads();
 837   }
 838
 839   return result_code_;
 840 }
 841
 842 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
 843   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
 844   run_message_loop_ = false;
 845 #if !defined(OS_ANDROID)
 846   chrome::MaybeShowInvalidUserDataDirWarningDialog();
 847 #endif  // !defined(OS_ANDROID)
 848   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
 849     return chrome::RESULT_CODE_MISSING_DATA;
 850
 851   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
 852   MediaCaptureDevicesDispatcher::GetInstance();
 853
 854   // Android's first run is done in Java instead of native.
 855 #if !defined(OS_ANDROID)
 856   process_singleton_.reset(new ChromeProcessSingleton(
 857       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
 858
 859   // Cache first run state early.
 860   first_run::IsChromeFirstRun();
 861 #endif  // !defined(OS_ANDROID)
 862
 863   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
 864       JsonPrefStore::GetTaskRunnerForFile(
 865           base::FilePath(chrome::kLocalStorePoolName),
 866           BrowserThread::GetBlockingPool());
 867
 868   {
 869     TRACE_EVENT0("startup",
 870       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
 871     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
 872                                                   parsed_command_line()));
 873   }
 874
 875   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
 876     TRACE_EVENT0("startup",
 877         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
 878     // User wants to override default tracking status.
 879     std::string flag =
 880       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
 881     // Default to basic profiling (no parent child support).
 882     tracked_objects::ThreadData::Status status =
 883           tracked_objects::ThreadData::PROFILING_ACTIVE;
 884     if (flag.compare("0") != 0)
 885       status = tracked_objects::ThreadData::DEACTIVATED;
 886     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
 887   }
 888
 889   local_state_ = InitializeLocalState(
 890       local_state_task_runner.get(), parsed_command_line());
 891
 892 #if !defined(OS_ANDROID)
 893   // These members must be initialized before returning from this function.
 894   master_prefs_.reset(new first_run::MasterPrefs);
 895   // Android doesn't use StartupBrowserCreator.
 896   browser_creator_.reset(new StartupBrowserCreator);
 897   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
 898   chrome::UMABrowsingActivityObserver::Init();
 899 #endif  // !defined(OS_ANDROID)
 900
 901 #if !defined(OS_CHROMEOS)
 902   // Convert active labs into switches. This needs to be done before
 903   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
 904   // affected by experiment flags (--touch-optimized-ui in particular).
 905   // On ChromeOS system level flags are applied from the device settings from
 906   // the session manager.
 907   {
 908     TRACE_EVENT0("startup",
 909         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
 910     about_flags::PrefServiceFlagsStorage flags_storage_(
 911         g_browser_process->local_state());
 912     about_flags::ConvertFlagsToSwitches(&flags_storage_,
 913                                         base::CommandLine::ForCurrentProcess(),
 914                                         about_flags::kAddSentinels);
 915   }
 916 #endif  // !defined(OS_CHROMEOS)
 917
 918 #if defined(OS_WIN)
 919   // This is needed to enable ETW exporting when requested in about:flags.
 920   // Normally, we enable it in ContentMainRunnerImpl::Initialize when the flag
 921   // is present on the command line but flags in about:flags are converted only
 922   // after this function runs. Note that this starts exporting later which
 923   // affects tracing the browser startup. Also, this is only relevant for the
 924   // browser process, as other processes will get all the flags on their command
 925   // line regardless of the origin (command line or about:flags).
 926   if (parsed_command_line().HasSwitch(switches::kTraceExportEventsToETW))
 927     base::trace_event::TraceEventETWExport::EnableETWExport();
 928 #endif  // OS_WIN
 929
 930   local_state_->UpdateCommandLinePrefStore(
 931       new CommandLinePrefStore(base::CommandLine::ForCurrentProcess()));
 932
 933   // Reset the command line in the crash report details, since we may have
 934   // just changed it to include experiments.
 935   crash_keys::SetSwitchesFromCommandLine(
 936       base::CommandLine::ForCurrentProcess());
 937
 938   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
 939   // needed when loading the MainMenu.nib and the language doesn't depend on
 940   // anything since it comes from Cocoa.
 941 #if defined(OS_MACOSX)
 942   std::string locale =
 943       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
 944   browser_process_->SetApplicationLocale(locale);
 945 #else
 946   const std::string locale =
 947       local_state_->GetString(prefs::kApplicationLocale);
 948
 949   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
 950   // method InitSharedInstance is ignored.
 951
 952   TRACE_EVENT_BEGIN0("startup",
 953       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 954   const std::string loaded_locale =
 955       ui::ResourceBundle::InitSharedInstanceWithLocale(
 956           locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 957   TRACE_EVENT_END0("startup",
 958       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 959
 960   if (loaded_locale.empty() &&
 961       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
 962     ShowMissingLocaleMessageBox();
 963     return chrome::RESULT_CODE_MISSING_DATA;
 964   }
 965   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
 966   browser_process_->SetApplicationLocale(loaded_locale);
 967
 968   {
 969     TRACE_EVENT0("startup",
 970         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
 971     base::FilePath resources_pack_path;
 972     PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 973 #if defined(OS_ANDROID)
 974     ui::LoadMainAndroidPackFile("assets/resources.pak", resources_pack_path);
 975 #else
 976     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 977         resources_pack_path, ui::SCALE_FACTOR_NONE);
 978 #endif  // defined(OS_ANDROID)
 979   }
 980 #endif  // defined(OS_MACOSX)
 981
 982   // Android does first run in Java instead of native.
 983   // Chrome OS has its own out-of-box-experience code.
 984 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 985   // On first run, we need to process the predictor preferences before the
 986   // browser's profile_manager object is created, but after ResourceBundle
 987   // is initialized.
 988   if (first_run::IsChromeFirstRun()) {
 989     first_run::ProcessMasterPreferencesResult pmp_result =
 990         first_run::ProcessMasterPreferences(user_data_dir_,
 991                                             master_prefs_.get());
 992     if (pmp_result == first_run::EULA_EXIT_NOW)
 993       return chrome::RESULT_CODE_EULA_REFUSED;
 994
 995     if (!parsed_command_line().HasSwitch(switches::kApp) &&
 996         !parsed_command_line().HasSwitch(switches::kAppId) &&
 997         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
 998       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
 999     }
1000
1001     // TODO(macourteau): refactor preferences that are copied from
1002     // master_preferences into local_state, as a "local_state" section in
1003     // master preferences. If possible, a generic solution would be preferred
1004     // over a copy one-by-one of specific preferences. Also see related TODO
1005     // in first_run.h.
1006
1007     // Store the initial VariationsService seed in local state, if it exists
1008     // in master prefs.
1009     if (!master_prefs_->variations_seed.empty() ||
1010         !master_prefs_->compressed_variations_seed.empty()) {
1011       if (!master_prefs_->variations_seed.empty()) {
1012         local_state_->SetString(variations::prefs::kVariationsSeed,
1013                                 master_prefs_->variations_seed);
1014       }
1015       if (!master_prefs_->compressed_variations_seed.empty()) {
1016         local_state_->SetString(variations::prefs::kVariationsCompressedSeed,
1017                                 master_prefs_->compressed_variations_seed);
1018       }
1019       if (!master_prefs_->variations_seed_signature.empty()) {
1020         local_state_->SetString(variations::prefs::kVariationsSeedSignature,
1021                                 master_prefs_->variations_seed_signature);
1022       }
1023       // Set the variation seed date to the current system time. If the user's
1024       // clock is incorrect, this may cause some field trial expiry checks to
1025       // not do the right thing until the next seed update from the server,
1026       // when this value will be updated.
1027       local_state_->SetInt64(variations::prefs::kVariationsSeedDate,
1028                              base::Time::Now().ToInternalValue());
1029     }
1030
1031     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
1032       local_state_->SetString(
1033           prefs::kBrowserSuppressDefaultBrowserPrompt,
1034           master_prefs_->suppress_default_browser_prompt_for_version);
1035     }
1036
1037 #if defined(OS_WIN)
1038     if (!master_prefs_->welcome_page_on_os_upgrade_enabled)
1039       local_state_->SetBoolean(prefs::kWelcomePageOnOSUpgradeEnabled, false);
1040 #endif
1041   }
1042 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1043
1044 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
1045   // Set the product channel for crash reports.
1046   base::debug::SetCrashKeyValue(crash_keys::kChannel,
1047                                 chrome::GetChannelString());
1048 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
1049
1050   // Initialize tracking synchronizer system.
1051   tracking_synchronizer_ = new metrics::TrackingSynchronizer(
1052       make_scoped_ptr(new base::DefaultTickClock()));
1053
1054 #if defined(OS_MACOSX)
1055   // Get the Keychain API to register for distributed notifications on the main
1056   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
1057   // which doesn't. This ensures those notifications will get delivered
1058   // properly. See issue 37766.
1059   // (Note that the callback mask here is empty. I don't want to register for
1060   // any callbacks, I just want to initialize the mechanism.)
1061   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
1062 #endif  // defined(OS_MACOSX)
1063
1064 #if defined(OS_CHROMEOS)
1065   // Must be done after g_browser_process is constructed, before
1066   // SetupMetricsAndFieldTrials().
1067   chromeos::CrosSettings::Initialize();
1068 #endif  // defined(OS_CHROMEOS)
1069
1070   // Now the command line has been mutated based on about:flags, we can setup
1071   // metrics and initialize field trials. The field trials are needed by
1072   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
1073   SetupMetricsAndFieldTrials();
1074
1075   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
1076   browser_process_->PreCreateThreads();
1077
1078   return content::RESULT_CODE_NORMAL_EXIT;
1079 }
1080
1081 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
1082   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
1083   TRACK_SCOPED_REGION(
1084       "Startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
1085
1086   result_code_ = PreMainMessageLoopRunImpl();
1087
1088   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1089     chrome_extra_parts_[i]->PreMainMessageLoopRun();
1090 }
1091
1092 // PreMainMessageLoopRun calls these extra stages in the following order:
1093 //  PreMainMessageLoopRunImpl()
1094 //   ... initial setup, including browser_process_ setup.
1095 //   PreProfileInit()
1096 //   ... additional setup, including CreateProfile()
1097 //   PostProfileInit()
1098 //   ... additional setup
1099 //   PreBrowserStart()
1100 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
1101 //   PostBrowserStart()
1102
1103 void ChromeBrowserMainParts::PreProfileInit() {
1104   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
1105
1106   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1107     chrome_extra_parts_[i]->PreProfileInit();
1108
1109 #if !defined(OS_ANDROID)
1110   // Initialize the feedback uploader so it can setup notifications for profile
1111   // creation.
1112   feedback::FeedbackProfileObserver::Initialize();
1113
1114   // Ephemeral profiles may have been left behind if the browser crashed.
1115   g_browser_process->profile_manager()->CleanUpEphemeralProfiles();
1116 #endif  // !defined(OS_ANDROID)
1117
1118 #if defined(ENABLE_EXTENSIONS)
1119   javascript_dialog_extensions_client::InstallClient();
1120 #endif  // defined(ENABLE_EXTENSIONS)
1121
1122 #if !defined(OS_IOS)
1123   InstallChromeJavaScriptNativeDialogFactory();
1124 #endif  // !defined(OS_IOS)
1125 }
1126
1127 void ChromeBrowserMainParts::PostProfileInit() {
1128   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
1129
1130 #if defined(OS_ANDROID)
1131   DevToolsDiscoveryProviderAndroid::Install();
1132 #else
1133   ChromeDevToolsDiscoveryProvider::Install();
1134 #endif  // defined(OS_ANDROID)
1135
1136   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
1137   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1138     chrome_extra_parts_[i]->PostProfileInit();
1139 }
1140
1141 void ChromeBrowserMainParts::PreBrowserStart() {
1142   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
1143   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1144     chrome_extra_parts_[i]->PreBrowserStart();
1145
1146   three_d_observer_.reset(new ThreeDAPIObserver());
1147
1148   // Start the out-of-memory priority manager here so that we give the most
1149   // amount of time for the other services to start up before we start
1150   // adjusting the oom priority.
1151   //
1152   // On CrOS, it is always enabled. On other platforms, it's behind a flag for
1153   // now.
1154 #if defined(OS_CHROMEOS)
1155   g_browser_process->GetOomPriorityManager()->Start(false);
1156 #elif defined(OS_WIN) || defined(OS_MACOSX)
1157   const std::string group_name =
1158       base::FieldTrialList::FindFullName("AutomaticTabDiscarding");
1159   if (parsed_command_line().HasSwitch(switches::kEnableTabDiscarding) ||
1160       base::StartsWith(group_name, "Enabled", base::CompareCase::SENSITIVE)) {
1161     bool enabled_once = base::StartsWith(group_name, "Enabled_Once",
1162                                          base::CompareCase::SENSITIVE);
1163     g_browser_process->GetOomPriorityManager()->Start(enabled_once);
1164   }
1165 #endif
1166 }
1167
1168 void ChromeBrowserMainParts::PostBrowserStart() {
1169   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
1170   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1171     chrome_extra_parts_[i]->PostBrowserStart();
1172 #if !defined(OS_ANDROID)
1173   // Allow ProcessSingleton to process messages.
1174   process_singleton_->Unlock();
1175 #endif  // !defined(OS_ANDROID)
1176 #if defined(ENABLE_WEBRTC)
1177   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
1178   // to reduce the impact on startup time.
1179   BrowserThread::PostDelayedTask(
1180       BrowserThread::UI,
1181       FROM_HERE,
1182       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
1183       base::TimeDelta::FromMinutes(1));
1184 #endif  // defined(ENABLE_WEBRTC)
1185
1186 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1187   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
1188           switches::kEnableWebUsbNotifications)) {
1189     webusb_browser_client_.reset(new ChromeWebUsbBrowserClient());
1190     webusb_detector_.reset(
1191         new webusb::WebUsbDetector(webusb_browser_client_.get()));
1192   }
1193 #endif
1194
1195   // At this point, StartupBrowserCreator::Start has run creating initial
1196   // browser windows and tabs, but no progress has been made in loading
1197   // content as the main message loop hasn't started processing tasks yet.
1198   // We setup to observe to the initial page load here to defer running
1199   // task posted via PostAfterStartupTask until its complete.
1200   AfterStartupTaskUtils::StartMonitoringStartup();
1201 }
1202
1203 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
1204   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1205   TRACK_SCOPED_REGION(
1206       "Startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1207
1208   SCOPED_UMA_HISTOGRAM_LONG_TIMER("Startup.PreMainMessageLoopRunImplLongTime");
1209   const base::TimeTicks start_time_step1 = base::TimeTicks::Now();
1210
1211 #if defined(OS_WIN)
1212   // Windows parental controls calls can be slow, so we do an early init here
1213   // that calculates this value off of the UI thread.
1214   IncognitoModePrefs::InitializePlatformParentalControls();
1215 #endif
1216
1217 #if defined(ENABLE_EXTENSIONS)
1218   if (!variations::GetVariationParamValue(
1219       "LightSpeed", "EarlyInitStartup").empty()) {
1220     // Try to compute this early on another thread so that we don't spend time
1221     // during profile load initializing the extensions APIs.
1222     BrowserThread::PostTask(
1223         BrowserThread::FILE_USER_BLOCKING,
1224         FROM_HERE,
1225         base::Bind(
1226             base::IgnoreResult(&extensions::FeatureProvider::GetAPIFeatures)));
1227   }
1228 #endif
1229
1230   // Android updates the metrics service dynamically depending on whether the
1231   // application is in the foreground or not. Do not start here.
1232 #if !defined(OS_ANDROID)
1233   // Now that the file thread has been started, start recording.
1234   StartMetricsRecording();
1235 #endif  // !defined(OS_ANDROID)
1236
1237   if (!base::debug::BeingDebugged()) {
1238     // Create watchdog thread after creating all other threads because it will
1239     // watch the other threads and they must be running.
1240     browser_process_->watchdog_thread();
1241   }
1242
1243   // Do any initializating in the browser process that requires all threads
1244   // running.
1245   browser_process_->PreMainMessageLoopRun();
1246
1247   // Record last shutdown time into a histogram.
1248   browser_shutdown::ReadLastShutdownInfo();
1249
1250 #if defined(OS_WIN)
1251   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
1252   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
1253   // upgrade/uninstall happen separately.
1254   bool already_running = browser_util::IsBrowserAlreadyRunning();
1255
1256   // If the command line specifies 'uninstall' then we need to work here
1257   // unless we detect another chrome browser running.
1258   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
1259     return DoUninstallTasks(already_running);
1260   }
1261
1262   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
1263       parsed_command_line().HasSwitch(switches::kShowIcons)) {
1264     return ChromeBrowserMainPartsWin::HandleIconsCommands(
1265         parsed_command_line_);
1266   }
1267
1268   ui::SelectFileDialog::SetFactory(new ChromeSelectFileDialogFactory(
1269       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
1270 #endif  // defined(OS_WIN)
1271
1272   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
1273     bool is_managed = g_browser_process->local_state()->IsManagedPreference(
1274         prefs::kDefaultBrowserSettingEnabled);
1275     if (is_managed && !g_browser_process->local_state()->GetBoolean(
1276         prefs::kDefaultBrowserSettingEnabled)) {
1277       return static_cast<int>(chrome::RESULT_CODE_ACTION_DISALLOWED_BY_POLICY);
1278     }
1279
1280     return ShellIntegration::SetAsDefaultBrowser() ?
1281         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
1282         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
1283   }
1284
1285 #if defined(USE_AURA)
1286   // Make sure aura::Env has been initialized.
1287   CHECK(aura::Env::GetInstance());
1288 #endif  // defined(USE_AURA)
1289
1290   // Android doesn't support extensions and doesn't implement ProcessSingleton.
1291 #if !defined(OS_ANDROID)
1292   // If the command line specifies --pack-extension, attempt the pack extension
1293   // startup action and exit.
1294   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
1295     extensions::StartupHelper extension_startup_helper;
1296     if (extension_startup_helper.PackExtension(parsed_command_line()))
1297       return content::RESULT_CODE_NORMAL_EXIT;
1298     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
1299   }
1300
1301   // When another process is running, use that process instead of starting a
1302   // new one. NotifyOtherProcess will currently give the other process up to
1303   // 20 seconds to respond. Note that this needs to be done before we attempt
1304   // to read the profile.
1305   notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
1306   switch (notify_result_) {
1307     case ProcessSingleton::PROCESS_NONE:
1308       // No process already running, fall through to starting a new one.
1309       break;
1310
1311     case ProcessSingleton::PROCESS_NOTIFIED:
1312 #if defined(OS_POSIX) && !defined(OS_MACOSX)
1313       // On POSIX systems, print a message notifying the process is running.
1314       printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
1315           l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
1316 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
1317
1318       // Having a differentiated return type for testing allows for tests to
1319       // verify proper handling of some switches. When not testing, stick to
1320       // the standard Unix convention of returning zero when things went as
1321       // expected.
1322       if (parsed_command_line().HasSwitch(switches::kTestType))
1323         return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
1324       return content::RESULT_CODE_NORMAL_EXIT;
1325
1326     case ProcessSingleton::PROFILE_IN_USE:
1327       return chrome::RESULT_CODE_PROFILE_IN_USE;
1328
1329     case ProcessSingleton::LOCK_ERROR:
1330       LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
1331                     "directory. This means that running multiple instances "
1332                     "would start multiple browser processes rather than "
1333                     "opening a new window in the existing process. Aborting "
1334                     "now to avoid profile corruption.";
1335       return chrome::RESULT_CODE_PROFILE_IN_USE;
1336
1337     default:
1338       NOTREACHED();
1339   }
1340 #endif  // !defined(OS_ANDROID)
1341
1342   // Handle special early return paths (which couldn't be processed even earlier
1343   // as they require the process singleton to be held) first.
1344
1345   std::string try_chrome =
1346       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
1347   if (!try_chrome.empty()) {
1348 #if defined(OS_WIN)
1349     // Setup.exe has determined that we need to run a retention experiment
1350     // and has lauched chrome to show the experiment UI. It is guaranteed that
1351     // no other Chrome is currently running as the process singleton was
1352     // sucessfully grabbed above.
1353     int try_chrome_int;
1354     base::StringToInt(try_chrome, &try_chrome_int);
1355     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
1356         try_chrome_int,
1357         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
1358                    base::Unretained(process_singleton_.get())));
1359     if (answer == TryChromeDialogView::NOT_NOW)
1360       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
1361     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
1362       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
1363     // At this point the user is willing to try chrome again.
1364     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
1365       // Only set in the unattended case, the interactive case is Windows 8.
1366       if (ShellIntegration::CanSetAsDefaultBrowser() ==
1367           ShellIntegration::SET_DEFAULT_UNATTENDED)
1368         ShellIntegration::SetAsDefaultBrowser();
1369     }
1370 #else
1371     // We don't support retention experiments on Mac or Linux.
1372     return content::RESULT_CODE_NORMAL_EXIT;
1373 #endif  // defined(OS_WIN)
1374   }
1375
1376 #if defined(OS_WIN)
1377   // Do the tasks if chrome has been upgraded while it was last running.
1378   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
1379     return content::RESULT_CODE_NORMAL_EXIT;
1380
1381   // Check if there is any machine level Chrome installed on the current
1382   // machine. If yes and the current Chrome process is user level, we do not
1383   // allow the user level Chrome to run. So we notify the user and uninstall
1384   // user level Chrome.
1385   // Note this check needs to happen here (after the process singleton was
1386   // obtained but before potentially creating the first run sentinel).
1387   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
1388     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
1389 #endif  // defined(OS_WIN)
1390
1391 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1392   if (sxs_linux::ShouldMigrateUserDataDir())
1393     return sxs_linux::MigrateUserDataDir();
1394 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1395
1396   // Desktop construction occurs here, (required before profile creation).
1397   PreProfileInit();
1398
1399   // Profile creation ----------------------------------------------------------
1400
1401   metrics::MetricsService::SetExecutionPhase(
1402       metrics::MetricsService::CREATE_PROFILE,
1403       g_browser_process->local_state());
1404
1405   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep1Time",
1406                       base::TimeTicks::Now() - start_time_step1);
1407
1408   // This step is costly and is already measured in Startup.CreateFirstProfile
1409   // and more directly Profile.CreateAndInitializeProfile.
1410   profile_ = CreatePrimaryProfile(parameters(),
1411                                   user_data_dir_,
1412                                   parsed_command_line());
1413   if (!profile_)
1414     return content::RESULT_CODE_NORMAL_EXIT;
1415
1416 #if !defined(OS_ANDROID)
1417   const base::TimeTicks start_time_step2 = base::TimeTicks::Now();
1418   // The first run sentinel must be created after the process singleton was
1419   // grabbed and no early return paths were otherwise hit above.
1420   first_run::CreateSentinelIfNeeded();
1421 #endif  // !defined(OS_ANDROID)
1422
1423 #if defined(ENABLE_BACKGROUND)
1424   // Autoload any profiles which are running background apps.
1425   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
1426   browser_process_->profile_manager()->AutoloadProfiles();
1427 #endif  // defined(ENABLE_BACKGROUND)
1428   // Post-profile init ---------------------------------------------------------
1429
1430   TranslateService::Initialize();
1431
1432   // Needs to be done before PostProfileInit, since login manager on CrOS is
1433   // called inside PostProfileInit.
1434   content::WebUIControllerFactory::RegisterFactory(
1435       ChromeWebUIControllerFactory::GetInstance());
1436
1437   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
1438   // So make sure to create it before that.
1439 #if !defined(DISABLE_NACL)
1440   NaClBrowserDelegateImpl* delegate =
1441       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
1442   nacl::NaClBrowser::SetDelegate(delegate);
1443 #endif  // !defined(DISABLE_NACL)
1444
1445   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
1446   // (requires supporting early exit).
1447   PostProfileInit();
1448
1449   // Retrieve cached GL strings from local state and use them for GPU
1450   // blacklist decisions.
1451   if (g_browser_process->gl_string_manager())
1452     g_browser_process->gl_string_manager()->Initialize();
1453
1454   // Create an instance of GpuModeManager to watch gpu mode pref change.
1455   g_browser_process->gpu_mode_manager();
1456
1457 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1458   // Show the First Run UI if this is the first time Chrome has been run on
1459   // this computer, or we're being compelled to do so by a command line flag.
1460   // Note that this be done _after_ the PrefService is initialized and all
1461   // preferences are registered, since some of the code that the importer
1462   // touches reads preferences.
1463   if (first_run::IsChromeFirstRun()) {
1464     first_run::AutoImport(profile_,
1465                           master_prefs_->homepage_defined,
1466                           master_prefs_->do_import_items,
1467                           master_prefs_->dont_import_items,
1468                           master_prefs_->import_bookmarks_path);
1469
1470     // Note: this can pop the first run consent dialog on linux.
1471     first_run::DoPostImportTasks(profile_,
1472                                  master_prefs_->make_chrome_default_for_user);
1473
1474     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
1475       browser_creator_->set_show_main_browser_window(
1476           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
1477     } else {
1478       browser_creator_->set_is_default_browser_dialog_suppressed(true);
1479     }
1480   }
1481 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1482
1483 #if defined(OS_WIN)
1484   // Sets things up so that if we crash from this point on, a dialog will
1485   // popup asking the user to restart chrome. It is done this late to avoid
1486   // testing against a bunch of special cases that are taken care early on.
1487   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
1488       parsed_command_line());
1489
1490   // Registers Chrome with the Windows Restart Manager, which will restore the
1491   // Chrome session when the computer is restarted after a system update.
1492   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
1493   // but should run on startup if extended to handle crashes/hangs/patches.
1494   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
1495   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
1496     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
1497         parsed_command_line());
1498   }
1499
1500   // Verify that the profile is not on a network share and if so prepare to show
1501   // notification to the user.
1502   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
1503     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
1504         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
1505                    profile_->GetPath()));
1506   }
1507 #endif  // defined(OS_WIN)
1508
1509 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1510   // Init the RLZ library. This just binds the dll and schedules a task on the
1511   // file thread to be run sometime later. If this is the first run we record
1512   // the installation event.
1513   PrefService* pref_service = profile_->GetPrefs();
1514   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
1515       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
1516   // Negative ping delay means to send ping immediately after a first search is
1517   // recorded.
1518   rlz::RLZTracker::SetRlzDelegate(
1519       make_scoped_ptr(new ChromeRLZTrackerDelegate));
1520   rlz::RLZTracker::InitRlzDelayed(
1521       first_run::IsChromeFirstRun(), ping_delay < 0,
1522       base::TimeDelta::FromMilliseconds(abs(ping_delay)),
1523       ChromeRLZTrackerDelegate::IsGoogleDefaultSearch(profile_),
1524       ChromeRLZTrackerDelegate::IsGoogleHomepage(profile_),
1525       ChromeRLZTrackerDelegate::IsGoogleInStartpages(profile_));
1526 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1527
1528   // Configure modules that need access to resources.
1529   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
1530   media::SetLocalizedStringProvider(
1531       chrome_common_media::LocalizedStringProvider);
1532
1533   // In unittest mode, this will do nothing.  In normal mode, this will create
1534   // the global IntranetRedirectDetector instance, which will promptly go to
1535   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
1536   // to see if it should do anything else.
1537   //
1538   // A simpler way of doing all this would be to have some function which could
1539   // give the time elapsed since startup, and simply have this object check that
1540   // when asked to initialize itself, but this doesn't seem to exist.
1541   //
1542   // This can't be created in the BrowserProcessImpl constructor because it
1543   // needs to read prefs that get set after that runs.
1544   browser_process_->intranet_redirect_detector();
1545
1546 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
1547   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
1548     base::FilePath path =
1549         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
1550     printing::PrintedDocument::set_debug_dump_path(path);
1551   }
1552 #endif  // defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
1553
1554   HandleTestParameters(parsed_command_line());
1555   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
1556       base::debug::BeingDebugged());
1557
1558   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
1559       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
1560   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
1561       browser_process_->GetApplicationLocale());
1562
1563   // Start watching for hangs during startup. We disarm this hang detector when
1564   // ThreadWatcher takes over or when browser is shutdown or when
1565   // startup_watcher_ is deleted.
1566   metrics::MetricsService::SetExecutionPhase(
1567       metrics::MetricsService::STARTUP_TIMEBOMB_ARM,
1568       g_browser_process->local_state());
1569   startup_watcher_->Arm(base::TimeDelta::FromSeconds(600));
1570
1571   // On mobile, need for clean shutdown arises only when the application comes
1572   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
1573   // http://crbug.com/179143
1574 #if !defined(OS_ANDROID)
1575   // Start watching for a hang.
1576   browser_process_->metrics_service()->LogNeedForCleanShutdown();
1577 #endif  // !defined(OS_ANDROID)
1578
1579 #if defined(ENABLE_PRINT_PREVIEW)
1580   // Create the instance of the cloud print proxy service so that it can launch
1581   // the service process if needed. This is needed because the service process
1582   // might have shutdown because an update was available.
1583   // TODO(torne): this should maybe be done with
1584   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
1585   // instead?
1586   CloudPrintProxyServiceFactory::GetForProfile(profile_);
1587 #endif  // defined(ENABLE_PRINT_PREVIEW)
1588
1589   // Start watching all browser threads for responsiveness.
1590   metrics::MetricsService::SetExecutionPhase(
1591       metrics::MetricsService::THREAD_WATCHER_START,
1592       g_browser_process->local_state());
1593   ThreadWatcherList::StartWatchingAll(parsed_command_line());
1594
1595 #if defined(OS_ANDROID)
1596   ThreadWatcherAndroid::RegisterApplicationStatusListener();
1597 #endif  // defined(OS_ANDROID)
1598
1599 #if !defined(DISABLE_NACL)
1600   BrowserThread::PostTask(
1601       BrowserThread::IO,
1602       FROM_HERE,
1603       base::Bind(nacl::NaClProcessHost::EarlyStartup));
1604 #endif  // !defined(DISABLE_NACL)
1605
1606   // Make sure initial prefs are recorded
1607   PrefMetricsService::Factory::GetForProfile(profile_);
1608
1609   PreBrowserStart();
1610
1611   // Instantiate the notification UI manager, as this triggers a perf timer
1612   // used to measure startup time. TODO(stevenjb): Figure out what is actually
1613   // triggering the timer and call that explicitly in the approprate place.
1614   // http://crbug.com/105065.
1615   browser_process_->notification_ui_manager();
1616
1617   // This must be called prior to RegisterComponentsForUpdate, in case the CLD
1618   // data source is based on the Component Updater.
1619   translate::BrowserCldUtils::ConfigureDefaultDataProvider();
1620
1621   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
1622     RegisterComponentsForUpdate();
1623
1624 #if defined(OS_ANDROID)
1625   variations::VariationsService* variations_service =
1626       browser_process_->variations_service();
1627   if (variations_service) {
1628     // Just initialize the policy prefs service here. Variations seed fetching
1629     // will be initialized when the app enters foreground mode.
1630     variations_service->set_policy_pref_service(profile_->GetPrefs());
1631   }
1632   translate::TranslateDownloadManager::RequestLanguageList(
1633       profile_->GetPrefs());
1634
1635 #else
1636   // Most general initialization is behind us, but opening a
1637   // tab and/or session restore and such is still to be done.
1638   base::TimeTicks browser_open_start = base::TimeTicks::Now();
1639
1640   // We are in regular browser boot sequence. Open initial tabs and enter the
1641   // main message loop.
1642   std::vector<Profile*> last_opened_profiles;
1643 #if !defined(OS_CHROMEOS)
1644   // On ChromeOS multiple profiles doesn't apply, and will break if we load
1645   // them this early as the cryptohome hasn't yet been mounted (which happens
1646   // only once we log in).
1647   last_opened_profiles =
1648       g_browser_process->profile_manager()->GetLastOpenedProfiles();
1649 #endif  // defined(OS_CHROMEOS)
1650
1651   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep2Time",
1652                       base::TimeTicks::Now() - start_time_step2);
1653
1654   // This step is costly and is already measured in
1655   // Startup.StartupBrowserCreator_Start.
1656   const bool started = browser_creator_->Start(
1657       parsed_command_line(), base::FilePath(), profile_, last_opened_profiles);
1658   const base::TimeTicks start_time_step3 = base::TimeTicks::Now();
1659   if (started) {
1660 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1661     // Initialize autoupdate timer. Timer callback costs basically nothing
1662     // when browser is not in persistent mode, so it's OK to let it ride on
1663     // the main thread. This needs to be done here because we don't want
1664     // to start the timer when Chrome is run inside a test harness.
1665     browser_process_->StartAutoupdateTimer();
1666 #endif  // defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1667
1668 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1669     // On Linux, the running exe will be updated if an upgrade becomes
1670     // available while the browser is running.  We need to save the last
1671     // modified time of the exe, so we can compare to determine if there is
1672     // an upgrade while the browser is kept alive by a persistent extension.
1673     upgrade_util::SaveLastModifiedTimeOfExe();
1674 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1675
1676     // Record now as the last successful chrome start.
1677     GoogleUpdateSettings::SetLastRunTime();
1678
1679 #if defined(OS_MACOSX)
1680     // Call Recycle() here as late as possible, before going into the loop
1681     // because Start() will add things to it while creating the main window.
1682     if (parameters().autorelease_pool)
1683       parameters().autorelease_pool->Recycle();
1684 #endif  // defined(OS_MACOSX)
1685
1686     const base::TimeDelta delta = base::TimeTicks::Now() - browser_open_start;
1687     startup_metric_utils::RecordBrowserOpenTabsDelta(delta);
1688
1689     // If we're running tests (ui_task is non-null), then we don't want to
1690     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
1691     // RequestLanguageList
1692     if (parameters().ui_task == NULL) {
1693       // Request new variations seed information from server.
1694       variations::VariationsService* variations_service =
1695           browser_process_->variations_service();
1696       if (variations_service)
1697         variations_service->PerformPreMainMessageLoopStartup();
1698
1699       translate::TranslateDownloadManager::RequestLanguageList(
1700           profile_->GetPrefs());
1701     }
1702   }
1703   run_message_loop_ = started;
1704   browser_creator_.reset();
1705
1706 #if !defined(OS_LINUX) || defined(OS_CHROMEOS)  // http://crbug.com/426393
1707   if (g_browser_process->metrics_service()->reporting_active())
1708     content::StartPowerUsageMonitor();
1709 #endif  // !defined(OS_LINUX) || defined(OS_CHROMEOS)
1710
1711   process_power_collector_.reset(new ProcessPowerCollector);
1712   process_power_collector_->Initialize();
1713 #endif  // !defined(OS_ANDROID)
1714
1715   PostBrowserStart();
1716
1717   if (parameters().ui_task) {
1718     parameters().ui_task->Run();
1719     delete parameters().ui_task;
1720     run_message_loop_ = false;
1721   }
1722 #if defined(OS_ANDROID)
1723   // We never run the C++ main loop on Android, since the UI thread message
1724   // loop is controlled by the OS, so this is as close as we can get to
1725   // the start of the main loop.
1726   if (result_code_ <= 0) {
1727     RecordBrowserStartupTime();
1728   }
1729 #endif  // defined(OS_ANDROID)
1730
1731 #if !defined(OS_ANDROID)
1732   UMA_HISTOGRAM_TIMES("Startup.PreMainMessageLoopRunImplStep3Time",
1733                       base::TimeTicks::Now() - start_time_step3);
1734 #endif  // !defined(OS_ANDROID)
1735
1736   return result_code_;
1737 }
1738
1739 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
1740   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
1741 #if defined(OS_ANDROID)
1742   // Chrome on Android does not use default MessageLoop. It has its own
1743   // Android specific MessageLoop
1744   NOTREACHED();
1745   return true;
1746 #else
1747   // Set the result code set in PreMainMessageLoopRun or set above.
1748   *result_code = result_code_;
1749   if (!run_message_loop_)
1750     return true;  // Don't run the default message loop.
1751
1752   // These should be invoked as close to the start of the browser's
1753   // UI thread message loop as possible to get a stable measurement
1754   // across versions.
1755   RecordBrowserStartupTime();
1756
1757   DCHECK(base::MessageLoopForUI::IsCurrent());
1758   base::RunLoop run_loop;
1759
1760   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
1761
1762   metrics::MetricsService::SetExecutionPhase(
1763       metrics::MetricsService::MAIN_MESSAGE_LOOP_RUN,
1764       g_browser_process->local_state());
1765   run_loop.Run();
1766
1767   return true;
1768 #endif  // defined(OS_ANDROID)
1769 }
1770
1771 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
1772   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
1773 #if defined(OS_ANDROID)
1774   // Chrome on Android does not use default MessageLoop. It has its own
1775   // Android specific MessageLoop
1776   NOTREACHED();
1777 #else
1778   // Start watching for jank during shutdown. It gets disarmed when
1779   // |shutdown_watcher_| object is destructed.
1780   metrics::MetricsService::SetExecutionPhase(
1781       metrics::MetricsService::SHUTDOWN_TIMEBOMB_ARM,
1782       g_browser_process->local_state());
1783   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1784
1785   // Disarm the startup hang detector time bomb if it is still Arm'ed.
1786   startup_watcher_->Disarm();
1787
1788   // Remove observers attached to D-Bus clients before DbusThreadManager is
1789   // shut down.
1790   process_power_collector_.reset();
1791
1792 #if !defined(OS_IOS)
1793   webusb_detector_.reset();
1794   webusb_browser_client_.reset();
1795 #endif
1796
1797   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1798     chrome_extra_parts_[i]->PostMainMessageLoopRun();
1799
1800   // Some tests don't set parameters.ui_task, so they started translate
1801   // language fetch that was never completed so we need to cleanup here
1802   // otherwise it will be done by the destructor in a wrong thread.
1803   TranslateService::Shutdown(parameters().ui_task == NULL);
1804
1805   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
1806     process_singleton_->Cleanup();
1807
1808   // Stop all tasks that might run on WatchDogThread.
1809   ThreadWatcherList::StopWatchingAll();
1810
1811   browser_process_->metrics_service()->Stop();
1812
1813   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
1814   browser_process_->StartTearDown();
1815 #endif  // defined(OS_ANDROID)
1816 }
1817
1818 void ChromeBrowserMainParts::PostDestroyThreads() {
1819 #if defined(OS_ANDROID)
1820   // On Android, there is no quit/exit. So the browser's main message loop will
1821   // not finish.
1822   NOTREACHED();
1823 #else
1824   browser_process_->PostDestroyThreads();
1825   // browser_shutdown takes care of deleting browser_process, so we need to
1826   // release it.
1827   ignore_result(browser_process_.release());
1828   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
1829   master_prefs_.reset();
1830   process_singleton_.reset();
1831   device_event_log::Shutdown();
1832
1833   // We need to do this check as late as possible, but due to modularity, this
1834   // may be the last point in Chrome.  This would be more effective if done at
1835   // a higher level on the stack, so that it is impossible for an early return
1836   // to bypass this code.  Perhaps we need a *final* hook that is called on all
1837   // paths from content/browser/browser_main.
1838   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
1839
1840 #if defined(OS_CHROMEOS)
1841   chromeos::CrosSettings::Shutdown();
1842 #endif  // defined(OS_CHROMEOS)
1843 #endif  // defined(OS_ANDROID)
1844 }
1845
1846 // Public members:
1847
1848 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
1849   chrome_extra_parts_.push_back(parts);
1850 }