chrome/browser/browser_process_impl.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/browser_process_impl.h"
   6
   7 #include <algorithm>
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/atomic_ref_count.h"
  12 #include "base/bind.h"
  13 #include "base/bind_helpers.h"
  14 #include "base/command_line.h"
  15 #include "base/debug/alias.h"
  16 #include "base/debug/leak_annotations.h"
  17 #include "base/files/file_path.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/synchronization/waitable_event.h"
  25 #include "base/threading/thread.h"
  26 #include "base/threading/thread_restrictions.h"
  27 #include "base/time/default_tick_clock.h"
  28 #include "base/trace_event/trace_event.h"
  29 #include "chrome/browser/chrome_browser_main.h"
  30 #include "chrome/browser/chrome_content_browser_client.h"
  31 #include "chrome/browser/chrome_notification_types.h"
  32 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
  33 #include "chrome/browser/component_updater/supervised_user_whitelist_installer.h"
  34 #include "chrome/browser/defaults.h"
  35 #include "chrome/browser/devtools/remote_debugging_server.h"
  36 #include "chrome/browser/download/download_request_limiter.h"
  37 #include "chrome/browser/download/download_status_updater.h"
  38 #include "chrome/browser/first_run/upgrade_util.h"
  39 #include "chrome/browser/gpu/gl_string_manager.h"
  40 #include "chrome/browser/gpu/gpu_mode_manager.h"
  41 #include "chrome/browser/icon_manager.h"
  42 #include "chrome/browser/intranet_redirect_detector.h"
  43 #include "chrome/browser/io_thread.h"
  44 #include "chrome/browser/lifetime/application_lifetime.h"
  45 #include "chrome/browser/metrics/metrics_services_manager.h"
  46 #include "chrome/browser/metrics/thread_watcher.h"
  47 #include "chrome/browser/net/chrome_net_log.h"
  48 #include "chrome/browser/net/crl_set_fetcher.h"
  49 #include "chrome/browser/notifications/notification_ui_manager.h"
  50 #include "chrome/browser/plugins/chrome_plugin_service_filter.h"
  51 #include "chrome/browser/plugins/plugin_finder.h"
  52 #include "chrome/browser/prefs/browser_prefs.h"
  53 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  54 #include "chrome/browser/prerender/prerender_tracker.h"
  55 #include "chrome/browser/printing/background_printing_manager.h"
  56 #include "chrome/browser/printing/print_job_manager.h"
  57 #include "chrome/browser/printing/print_preview_dialog_controller.h"
  58 #include "chrome/browser/profiles/profile_manager.h"
  59 #include "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
  60 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
  61 #include "chrome/browser/shell_integration.h"
  62 #include "chrome/browser/status_icons/status_tray.h"
  63 #include "chrome/browser/ui/browser_dialogs.h"
  64 #include "chrome/browser/ui/browser_finder.h"
  65 #include "chrome/browser/ui/user_manager.h"
  66 #include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
  67 #include "chrome/browser/web_resource/promo_resource_service.h"
  68 #include "chrome/common/chrome_constants.h"
  69 #include "chrome/common/chrome_paths.h"
  70 #include "chrome/common/chrome_switches.h"
  71 #include "chrome/common/extensions/chrome_extensions_client.h"
  72 #include "chrome/common/pref_names.h"
  73 #include "chrome/common/switch_utils.h"
  74 #include "chrome/common/url_constants.h"
  75 #include "chrome/installer/util/google_update_constants.h"
  76 #include "chrome/installer/util/google_update_settings.h"
  77 #include "components/component_updater/component_updater_service.h"
  78 #include "components/gcm_driver/gcm_driver.h"
  79 #include "components/metrics/metrics_service.h"
  80 #include "components/network_time/network_time_tracker.h"
  81 #include "components/policy/core/common/policy_service.h"
  82 #include "components/signin/core/common/profile_management_switches.h"
  83 #include "components/translate/core/browser/translate_download_manager.h"
  84 #include "components/update_client/update_query_params.h"
  85 #include "components/web_resource/web_resource_pref_names.h"
  86 #include "content/public/browser/browser_thread.h"
  87 #include "content/public/browser/child_process_security_policy.h"
  88 #include "content/public/browser/notification_details.h"
  89 #include "content/public/browser/plugin_service.h"
  90 #include "content/public/browser/render_process_host.h"
  91 #include "content/public/browser/resource_dispatcher_host.h"
  92 #include "content/public/browser/service_worker_context.h"
  93 #include "content/public/browser/storage_partition.h"
  94 #include "extensions/common/constants.h"
  95 #include "net/socket/client_socket_pool_manager.h"
  96 #include "net/url_request/url_request_context_getter.h"
  97 #include "ui/base/idle/idle.h"
  98 #include "ui/base/l10n/l10n_util.h"
  99 #include "ui/message_center/message_center.h"
 100
 101 #if defined(OS_WIN)
 102 #include "base/win/windows_version.h"
 103 #include "ui/views/focus/view_storage.h"
 104 #elif defined(OS_MACOSX)
 105 #include "chrome/browser/chrome_browser_main_mac.h"
 106 #endif
 107
 108 #if !defined(OS_ANDROID)
 109 #include "chrome/browser/chrome_device_client.h"
 110 #include "chrome/browser/services/gcm/gcm_desktop_utils.h"
 111 #include "components/gcm_driver/gcm_client_factory.h"
 112 #endif
 113
 114 #if defined(USE_AURA)
 115 #include "ui/aura/env.h"
 116 #endif
 117
 118 #if defined(ENABLE_BACKGROUND)
 119 #include "chrome/browser/background/background_mode_manager.h"
 120 #endif
 121
 122 #if defined(ENABLE_CONFIGURATION_POLICY)
 123 #include "components/policy/core/browser/browser_policy_connector.h"
 124 #else
 125 #include "components/policy/core/common/policy_service_stub.h"
 126 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 127
 128 #if defined(ENABLE_EXTENSIONS)
 129 #include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 130 #include "chrome/browser/extensions/event_router_forwarder.h"
 131 #include "chrome/browser/extensions/extension_renderer_state.h"
 132 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 133 #include "chrome/browser/ui/apps/chrome_app_window_client.h"
 134 #include "components/storage_monitor/storage_monitor.h"
 135 #include "extensions/common/extension_l10n_util.h"
 136 #endif
 137
 138 #if !defined(DISABLE_NACL)
 139 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 140 #endif
 141
 142 #if defined(ENABLE_PLUGIN_INSTALLATION)
 143 #include "chrome/browser/plugins/plugins_resource_service.h"
 144 #endif
 145
 146 #if defined(ENABLE_WEBRTC)
 147 #include "chrome/browser/media/webrtc_log_uploader.h"
 148 #endif
 149
 150 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 151 // How often to check if the persistent instance of Chrome needs to restart
 152 // to install an update.
 153 static const int kUpdateCheckIntervalHours = 6;
 154 #endif
 155
 156 #if defined(USE_X11) || defined(OS_WIN)
 157 // How long to wait for the File thread to complete during EndSession, on Linux
 158 // and Windows. We have a timeout here because we're unable to run the UI
 159 // messageloop and there's some deadlock risk. Our only option is to exit
 160 // anyway.
 161 static const int kEndSessionTimeoutSeconds = 10;
 162 #endif
 163
 164 using content::BrowserThread;
 165 using content::ChildProcessSecurityPolicy;
 166 using content::PluginService;
 167 using content::ResourceDispatcherHost;
 168
 169 BrowserProcessImpl::BrowserProcessImpl(
 170     base::SequencedTaskRunner* local_state_task_runner,
 171     const base::CommandLine& command_line)
 172     : created_watchdog_thread_(false),
 173       created_browser_policy_connector_(false),
 174       created_profile_manager_(false),
 175       created_local_state_(false),
 176       created_icon_manager_(false),
 177       created_notification_ui_manager_(false),
 178       created_safe_browsing_service_(false),
 179       module_ref_count_(0),
 180       did_start_(false),
 181       download_status_updater_(new DownloadStatusUpdater),
 182       local_state_task_runner_(local_state_task_runner) {
 183   g_browser_process = this;
 184   platform_part_.reset(new BrowserProcessPlatformPart());
 185
 186 #if defined(ENABLE_PRINTING)
 187   // Must be created after the NotificationService.
 188   print_job_manager_.reset(new printing::PrintJobManager);
 189 #endif
 190
 191   net_log_.reset(new ChromeNetLog);
 192
 193   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 194       extensions::kExtensionScheme);
 195   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 196       extensions::kExtensionResourceScheme);
 197   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 198       chrome::kChromeSearchScheme);
 199
 200 #if defined(OS_MACOSX)
 201   ui::InitIdleMonitor();
 202 #endif
 203
 204 #if !defined(OS_ANDROID)
 205   device_client_.reset(new ChromeDeviceClient);
 206 #endif
 207
 208 #if defined(ENABLE_EXTENSIONS)
 209   // Athena sets its own instance during Athena's init process.
 210   extensions::AppWindowClient::Set(ChromeAppWindowClient::GetInstance());
 211
 212   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
 213   ExtensionRendererState::GetInstance()->Init();
 214
 215   extensions::ExtensionsClient::Set(
 216       extensions::ChromeExtensionsClient::GetInstance());
 217
 218   extensions_browser_client_.reset(
 219       new extensions::ChromeExtensionsBrowserClient);
 220   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
 221 #endif
 222
 223   message_center::MessageCenter::Initialize();
 224
 225   update_client::UpdateQueryParams::SetDelegate(
 226       ChromeUpdateQueryParamsDelegate::GetInstance());
 227 }
 228
 229 BrowserProcessImpl::~BrowserProcessImpl() {
 230   tracked_objects::ThreadData::EnsureCleanupWasCalled(4);
 231
 232   g_browser_process = NULL;
 233 }
 234
 235 void BrowserProcessImpl::StartTearDown() {
 236     TRACE_EVENT0("shutdown", "BrowserProcessImpl::StartTearDown");
 237   // We need to destroy the MetricsServicesManager, IntranetRedirectDetector,
 238   // PromoResourceService, and SafeBrowsing ClientSideDetectionService (owned by
 239   // the SafeBrowsingService) before the io_thread_ gets destroyed, since their
 240   // destructors can call the URLFetcher destructor, which does a
 241   // PostDelayedTask operation on the IO thread. (The IO thread will handle that
 242   // URLFetcher operation before going away.)
 243   metrics_services_manager_.reset();
 244   intranet_redirect_detector_.reset();
 245 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
 246   if (safe_browsing_service_.get())
 247     safe_browsing_service()->ShutDown();
 248 #endif
 249   promo_resource_service_.reset();
 250 #if defined(ENABLE_PLUGIN_INSTALLATION)
 251   plugins_resource_service_.reset();
 252 #endif
 253
 254   // Need to clear the desktop notification balloons before the io_thread_ and
 255   // before the profiles, since if there are any still showing we will access
 256   // those things during teardown.
 257   notification_ui_manager_.reset();
 258
 259   // The SupervisedUserWhitelistInstaller observes the ProfileInfoCache, so it
 260   // needs to be shut down before the ProfileManager.
 261   supervised_user_whitelist_installer_.reset();
 262
 263   // Need to clear profiles (download managers) before the io_thread_.
 264   {
 265     TRACE_EVENT0("shutdown",
 266                  "BrowserProcessImpl::StartTearDown:ProfileManager");
 267     // The desktop User Manager needs to be closed before the guest profile
 268     // can be destroyed.
 269     if (switches::IsNewAvatarMenu())
 270       UserManager::Hide();
 271     profile_manager_.reset();
 272   }
 273
 274 #if !defined(OS_ANDROID)
 275   // Debugger must be cleaned up before IO thread and NotificationService.
 276   remote_debugging_server_.reset();
 277 #endif
 278
 279 #if defined(ENABLE_EXTENSIONS)
 280   ExtensionRendererState::GetInstance()->Shutdown();
 281
 282   media_file_system_registry_.reset();
 283   // Remove the global instance of the Storage Monitor now. Otherwise the
 284   // FILE thread would be gone when we try to release it in the dtor and
 285   // Valgrind would report a leak on almost every single browser_test.
 286   // TODO(gbillock): Make this unnecessary.
 287   storage_monitor::StorageMonitor::Destroy();
 288 #endif
 289
 290   message_center::MessageCenter::Shutdown();
 291
 292 #if defined(ENABLE_CONFIGURATION_POLICY)
 293   // The policy providers managed by |browser_policy_connector_| need to shut
 294   // down while the IO and FILE threads are still alive. The monitoring
 295   // framework owned by |browser_policy_connector_| relies on |gcm_driver_|, so
 296   // this must be shutdown before |gcm_driver_| below.
 297   if (browser_policy_connector_)
 298     browser_policy_connector_->Shutdown();
 299 #endif
 300
 301   // The |gcm_driver_| must shut down while the IO thread is still alive.
 302   if (gcm_driver_)
 303     gcm_driver_->Shutdown();
 304
 305   // Stop the watchdog thread before stopping other threads.
 306   watchdog_thread_.reset();
 307
 308 #if defined(USE_AURA)
 309   // Delete aura after the metrics service has been deleted as it accesses
 310   // monitor information.
 311   aura::Env::DeleteInstance();
 312 #endif
 313
 314   platform_part()->StartTearDown();
 315
 316 #if defined(ENABLE_WEBRTC)
 317   // Cancel any uploads to release the system url request context references.
 318   if (webrtc_log_uploader_)
 319     webrtc_log_uploader_->StartShutdown();
 320 #endif
 321
 322   if (local_state())
 323     local_state()->CommitPendingWrite();
 324 }
 325
 326 void BrowserProcessImpl::PostDestroyThreads() {
 327   // With the file_thread_ flushed, we can release any icon resources.
 328   icon_manager_.reset();
 329
 330 #if defined(ENABLE_WEBRTC)
 331   // Must outlive the file thread.
 332   webrtc_log_uploader_.reset();
 333 #endif
 334
 335   // Reset associated state right after actual thread is stopped,
 336   // as io_thread_.global_ cleanup happens in CleanUp on the IO
 337   // thread, i.e. as the thread exits its message loop.
 338   //
 339   // This is important also because in various places, the
 340   // IOThread object being NULL is considered synonymous with the
 341   // IO thread having stopped.
 342   io_thread_.reset();
 343 }
 344
 345 unsigned int BrowserProcessImpl::AddRefModule() {
 346   DCHECK(CalledOnValidThread());
 347
 348   // CHECK(!IsShuttingDown());
 349   if (IsShuttingDown()) {
 350     // Copy the stacktrace which released the final reference onto our stack so
 351     // it will be available in the crash report for inspection.
 352     base::debug::StackTrace callstack = release_last_reference_callstack_;
 353     base::debug::Alias(&callstack);
 354     CHECK(false);
 355   }
 356
 357   did_start_ = true;
 358   module_ref_count_++;
 359   return module_ref_count_;
 360 }
 361
 362 unsigned int BrowserProcessImpl::ReleaseModule() {
 363   DCHECK(CalledOnValidThread());
 364   DCHECK_NE(0u, module_ref_count_);
 365   module_ref_count_--;
 366   if (0 == module_ref_count_) {
 367     release_last_reference_callstack_ = base::debug::StackTrace();
 368
 369 #if defined(ENABLE_PRINTING)
 370     // Wait for the pending print jobs to finish. Don't do this later, since
 371     // this might cause a nested message loop to run, and we don't want pending
 372     // tasks to run once teardown has started.
 373     print_job_manager_->Shutdown();
 374 #endif
 375
 376 #if defined(LEAK_SANITIZER)
 377     // Check for memory leaks now, before we start shutting down threads. Doing
 378     // this early means we won't report any shutdown-only leaks (as they have
 379     // not yet happened at this point).
 380     // If leaks are found, this will make the process exit immediately.
 381     __lsan_do_leak_check();
 382 #endif
 383
 384     CHECK(base::MessageLoop::current()->is_running());
 385
 386 #if defined(OS_MACOSX)
 387     base::MessageLoop::current()->PostTask(
 388         FROM_HERE,
 389         base::Bind(ChromeBrowserMainPartsMac::DidEndMainMessageLoop));
 390 #endif
 391     base::MessageLoop::current()->Quit();
 392   }
 393   return module_ref_count_;
 394 }
 395
 396 namespace {
 397
 398 // Used at the end of session to block the UI thread for completion of sentinel
 399 // tasks on the set of threads used to persist profile data and local state.
 400 // This is done to ensure that the data has been persisted to disk before
 401 // continuing.
 402 class RundownTaskCounter :
 403     public base::RefCountedThreadSafe<RundownTaskCounter> {
 404  public:
 405   RundownTaskCounter();
 406
 407   // Posts a rundown task to |task_runner|, can be invoked an arbitrary number
 408   // of times before calling TimedWait.
 409   void Post(base::SequencedTaskRunner* task_runner);
 410
 411   // Waits until the count is zero or |max_time| has passed.
 412   // This can only be called once per instance.
 413   bool TimedWait(const base::TimeDelta& max_time);
 414
 415  private:
 416   friend class base::RefCountedThreadSafe<RundownTaskCounter>;
 417   ~RundownTaskCounter() {}
 418
 419   // Decrements the counter and releases the waitable event on transition to
 420   // zero.
 421   void Decrement();
 422
 423   // The count starts at one to defer the possibility of one->zero transitions
 424   // until TimedWait is called.
 425   base::AtomicRefCount count_;
 426   base::WaitableEvent waitable_event_;
 427
 428   DISALLOW_COPY_AND_ASSIGN(RundownTaskCounter);
 429 };
 430
 431 RundownTaskCounter::RundownTaskCounter()
 432     : count_(1), waitable_event_(true, false) {
 433 }
 434
 435 void RundownTaskCounter::Post(base::SequencedTaskRunner* task_runner) {
 436   // As the count starts off at one, it should never get to zero unless
 437   // TimedWait has been called.
 438   DCHECK(!base::AtomicRefCountIsZero(&count_));
 439
 440   base::AtomicRefCountInc(&count_);
 441
 442   // The task must be non-nestable to guarantee that it runs after all tasks
 443   // currently scheduled on |task_runner| have completed.
 444   task_runner->PostNonNestableTask(FROM_HERE,
 445       base::Bind(&RundownTaskCounter::Decrement, this));
 446 }
 447
 448 void RundownTaskCounter::Decrement() {
 449   if (!base::AtomicRefCountDec(&count_))
 450     waitable_event_.Signal();
 451 }
 452
 453 bool RundownTaskCounter::TimedWait(const base::TimeDelta& max_time) {
 454   // Decrement the excess count from the constructor.
 455   Decrement();
 456
 457   return waitable_event_.TimedWait(max_time);
 458 }
 459
 460 }  // namespace
 461
 462 void BrowserProcessImpl::EndSession() {
 463   // Mark all the profiles as clean.
 464   ProfileManager* pm = profile_manager();
 465   std::vector<Profile*> profiles(pm->GetLoadedProfiles());
 466   scoped_refptr<RundownTaskCounter> rundown_counter(new RundownTaskCounter());
 467   for (size_t i = 0; i < profiles.size(); ++i) {
 468     Profile* profile = profiles[i];
 469     profile->SetExitType(Profile::EXIT_SESSION_ENDED);
 470
 471     rundown_counter->Post(profile->GetIOTaskRunner().get());
 472   }
 473
 474   // Tell the metrics service it was cleanly shutdown.
 475   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 476   if (metrics && local_state()) {
 477     metrics->RecordStartOfSessionEnd();
 478 #if !defined(OS_CHROMEOS)
 479     // MetricsService lazily writes to prefs, force it to write now.
 480     // On ChromeOS, chrome gets killed when hangs, so no need to
 481     // commit metrics::prefs::kStabilitySessionEndCompleted change immediately.
 482     local_state()->CommitPendingWrite();
 483
 484     rundown_counter->Post(local_state_task_runner_.get());
 485 #endif
 486   }
 487
 488   // http://crbug.com/125207
 489   base::ThreadRestrictions::ScopedAllowWait allow_wait;
 490
 491   // We must write that the profile and metrics service shutdown cleanly,
 492   // otherwise on startup we'll think we crashed. So we block until done and
 493   // then proceed with normal shutdown.
 494   //
 495   // If you change the condition here, be sure to also change
 496   // ProfileBrowserTests to match.
 497 #if defined(USE_X11) || defined(OS_WIN)
 498   // Do a best-effort wait on the successful countdown of rundown tasks. Note
 499   // that if we don't complete "quickly enough", Windows will terminate our
 500   // process.
 501   //
 502   // On Windows, we previously posted a message to FILE and then ran a nested
 503   // message loop, waiting for that message to be processed until quitting.
 504   // However, doing so means that other messages will also be processed. In
 505   // particular, if the GPU process host notices that the GPU has been killed
 506   // during shutdown, it races exiting the nested loop with the process host
 507   // blocking the message loop attempting to re-establish a connection to the
 508   // GPU process synchronously. Because the system may not be allowing
 509   // processes to launch, this can result in a hang. See
 510   // http://crbug.com/318527.
 511   rundown_counter->TimedWait(
 512       base::TimeDelta::FromSeconds(kEndSessionTimeoutSeconds));
 513 #else
 514   NOTIMPLEMENTED();
 515 #endif
 516 }
 517
 518 MetricsServicesManager* BrowserProcessImpl::GetMetricsServicesManager() {
 519   DCHECK(CalledOnValidThread());
 520   if (!metrics_services_manager_)
 521     metrics_services_manager_.reset(new MetricsServicesManager(local_state()));
 522   return metrics_services_manager_.get();
 523 }
 524
 525 metrics::MetricsService* BrowserProcessImpl::metrics_service() {
 526   DCHECK(CalledOnValidThread());
 527   return GetMetricsServicesManager()->GetMetricsService();
 528 }
 529
 530 rappor::RapporService* BrowserProcessImpl::rappor_service() {
 531   DCHECK(CalledOnValidThread());
 532   return GetMetricsServicesManager()->GetRapporService();
 533 }
 534
 535 IOThread* BrowserProcessImpl::io_thread() {
 536   DCHECK(CalledOnValidThread());
 537   DCHECK(io_thread_.get());
 538   return io_thread_.get();
 539 }
 540
 541 WatchDogThread* BrowserProcessImpl::watchdog_thread() {
 542   DCHECK(CalledOnValidThread());
 543   if (!created_watchdog_thread_)
 544     CreateWatchdogThread();
 545   DCHECK(watchdog_thread_.get() != NULL);
 546   return watchdog_thread_.get();
 547 }
 548
 549 ProfileManager* BrowserProcessImpl::profile_manager() {
 550   DCHECK(CalledOnValidThread());
 551   if (!created_profile_manager_)
 552     CreateProfileManager();
 553   return profile_manager_.get();
 554 }
 555
 556 PrefService* BrowserProcessImpl::local_state() {
 557   DCHECK(CalledOnValidThread());
 558   if (!created_local_state_)
 559     CreateLocalState();
 560   return local_state_.get();
 561 }
 562
 563 net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 564   DCHECK(CalledOnValidThread());
 565   return io_thread()->system_url_request_context_getter();
 566 }
 567
 568 chrome_variations::VariationsService* BrowserProcessImpl::variations_service() {
 569   DCHECK(CalledOnValidThread());
 570   return GetMetricsServicesManager()->GetVariationsService();
 571 }
 572
 573 BrowserProcessPlatformPart* BrowserProcessImpl::platform_part() {
 574   return platform_part_.get();
 575 }
 576
 577 extensions::EventRouterForwarder*
 578 BrowserProcessImpl::extension_event_router_forwarder() {
 579 #if defined(ENABLE_EXTENSIONS)
 580   return extension_event_router_forwarder_.get();
 581 #else
 582   return NULL;
 583 #endif
 584 }
 585
 586 NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 587   DCHECK(CalledOnValidThread());
 588   if (!created_notification_ui_manager_)
 589     CreateNotificationUIManager();
 590   return notification_ui_manager_.get();
 591 }
 592
 593 message_center::MessageCenter* BrowserProcessImpl::message_center() {
 594   DCHECK(CalledOnValidThread());
 595   return message_center::MessageCenter::Get();
 596 }
 597
 598 policy::BrowserPolicyConnector* BrowserProcessImpl::browser_policy_connector() {
 599   DCHECK(CalledOnValidThread());
 600 #if defined(ENABLE_CONFIGURATION_POLICY)
 601   if (!created_browser_policy_connector_) {
 602     DCHECK(!browser_policy_connector_);
 603     browser_policy_connector_ = platform_part_->CreateBrowserPolicyConnector();
 604     created_browser_policy_connector_ = true;
 605   }
 606   return browser_policy_connector_.get();
 607 #else
 608   return NULL;
 609 #endif
 610 }
 611
 612 policy::PolicyService* BrowserProcessImpl::policy_service() {
 613 #if defined(ENABLE_CONFIGURATION_POLICY)
 614   return browser_policy_connector()->GetPolicyService();
 615 #else
 616   if (!policy_service_.get())
 617     policy_service_.reset(new policy::PolicyServiceStub());
 618   return policy_service_.get();
 619 #endif
 620 }
 621
 622 IconManager* BrowserProcessImpl::icon_manager() {
 623   DCHECK(CalledOnValidThread());
 624   if (!created_icon_manager_)
 625     CreateIconManager();
 626   return icon_manager_.get();
 627 }
 628
 629 GLStringManager* BrowserProcessImpl::gl_string_manager() {
 630   DCHECK(CalledOnValidThread());
 631   if (!gl_string_manager_.get())
 632     gl_string_manager_.reset(new GLStringManager());
 633   return gl_string_manager_.get();
 634 }
 635
 636 GpuModeManager* BrowserProcessImpl::gpu_mode_manager() {
 637   DCHECK(CalledOnValidThread());
 638   if (!gpu_mode_manager_.get())
 639     gpu_mode_manager_.reset(new GpuModeManager());
 640   return gpu_mode_manager_.get();
 641 }
 642
 643 void BrowserProcessImpl::CreateDevToolsHttpProtocolHandler(
 644     chrome::HostDesktopType host_desktop_type,
 645     const std::string& ip,
 646     uint16 port) {
 647   DCHECK(CalledOnValidThread());
 648 #if !defined(OS_ANDROID)
 649   // StartupBrowserCreator::LaunchBrowser can be run multiple times when browser
 650   // is started with several profiles or existing browser process is reused.
 651   if (!remote_debugging_server_.get()) {
 652     remote_debugging_server_.reset(
 653         new RemoteDebuggingServer(host_desktop_type, ip, port));
 654   }
 655 #endif
 656 }
 657
 658 bool BrowserProcessImpl::IsShuttingDown() {
 659   DCHECK(CalledOnValidThread());
 660   return did_start_ && 0 == module_ref_count_;
 661 }
 662
 663 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
 664   DCHECK(CalledOnValidThread());
 665   return print_job_manager_.get();
 666 }
 667
 668 printing::PrintPreviewDialogController*
 669     BrowserProcessImpl::print_preview_dialog_controller() {
 670 #if defined(ENABLE_PRINT_PREVIEW)
 671   DCHECK(CalledOnValidThread());
 672   if (!print_preview_dialog_controller_.get())
 673     CreatePrintPreviewDialogController();
 674   return print_preview_dialog_controller_.get();
 675 #else
 676   NOTIMPLEMENTED();
 677   return NULL;
 678 #endif
 679 }
 680
 681 printing::BackgroundPrintingManager*
 682     BrowserProcessImpl::background_printing_manager() {
 683 #if defined(ENABLE_PRINT_PREVIEW)
 684   DCHECK(CalledOnValidThread());
 685   if (!background_printing_manager_.get())
 686     CreateBackgroundPrintingManager();
 687   return background_printing_manager_.get();
 688 #else
 689   NOTIMPLEMENTED();
 690   return NULL;
 691 #endif
 692 }
 693
 694 IntranetRedirectDetector* BrowserProcessImpl::intranet_redirect_detector() {
 695   DCHECK(CalledOnValidThread());
 696   if (!intranet_redirect_detector_.get())
 697     CreateIntranetRedirectDetector();
 698   return intranet_redirect_detector_.get();
 699 }
 700
 701 const std::string& BrowserProcessImpl::GetApplicationLocale() {
 702   DCHECK(!locale_.empty());
 703   return locale_;
 704 }
 705
 706 void BrowserProcessImpl::SetApplicationLocale(const std::string& locale) {
 707   locale_ = locale;
 708 #if defined(ENABLE_EXTENSIONS)
 709   extension_l10n_util::SetProcessLocale(locale);
 710 #endif
 711   chrome::ChromeContentBrowserClient::SetApplicationLocale(locale);
 712   translate::TranslateDownloadManager::GetInstance()->set_application_locale(
 713       locale);
 714 }
 715
 716 DownloadStatusUpdater* BrowserProcessImpl::download_status_updater() {
 717   return download_status_updater_.get();
 718 }
 719
 720 MediaFileSystemRegistry* BrowserProcessImpl::media_file_system_registry() {
 721 #if defined(ENABLE_EXTENSIONS)
 722   if (!media_file_system_registry_)
 723     media_file_system_registry_.reset(new MediaFileSystemRegistry());
 724   return media_file_system_registry_.get();
 725 #else
 726   return NULL;
 727 #endif
 728 }
 729
 730 bool BrowserProcessImpl::created_local_state() const {
 731   return created_local_state_;
 732 }
 733
 734 #if defined(ENABLE_WEBRTC)
 735 WebRtcLogUploader* BrowserProcessImpl::webrtc_log_uploader() {
 736   if (!webrtc_log_uploader_.get())
 737     webrtc_log_uploader_.reset(new WebRtcLogUploader());
 738   return webrtc_log_uploader_.get();
 739 }
 740 #endif
 741
 742 network_time::NetworkTimeTracker* BrowserProcessImpl::network_time_tracker() {
 743   if (!network_time_tracker_) {
 744     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
 745         scoped_ptr<base::TickClock>(new base::DefaultTickClock()),
 746         local_state()));
 747   }
 748   return network_time_tracker_.get();
 749 }
 750
 751 gcm::GCMDriver* BrowserProcessImpl::gcm_driver() {
 752   DCHECK(CalledOnValidThread());
 753   if (!gcm_driver_)
 754     CreateGCMDriver();
 755   return gcm_driver_.get();
 756 }
 757
 758 // static
 759 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
 760   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
 761                                 false);
 762   // This policy needs to be defined before the net subsystem is initialized,
 763   // so we do it here.
 764   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
 765                                 net::kDefaultMaxSocketsPerProxyServer);
 766
 767   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 768
 769 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 770   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 771 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 772 #if defined(OS_WIN)
 773   if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
 774     registry->RegisterStringPref(prefs::kRelaunchMode,
 775                                  upgrade_util::kRelaunchModeDefault);
 776   }
 777 #endif
 778
 779   // TODO(brettw,*): this comment about ResourceBundle was here since
 780   // initial commit.  This comment seems unrelated, bit-rotten and
 781   // a candidate for removal.
 782   // Initialize ResourceBundle which handles files loaded from external
 783   // sources. This has to be done before uninstall code path and before prefs
 784   // are registered.
 785   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 786 #if defined(OS_CHROMEOS)
 787   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
 788   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
 789                                std::string());
 790 #endif  // defined(OS_CHROMEOS)
 791 #if !defined(OS_CHROMEOS)
 792   registry->RegisterBooleanPref(
 793       prefs::kMetricsReportingEnabled,
 794       GoogleUpdateSettings::GetCollectStatsConsent());
 795 #endif  // !defined(OS_CHROMEOS)
 796
 797 #if defined(OS_ANDROID)
 798   registry->RegisterBooleanPref(
 799       prefs::kCrashReportingEnabled, false);
 800 #endif  // defined(OS_ANDROID)
 801 }
 802
 803 DownloadRequestLimiter* BrowserProcessImpl::download_request_limiter() {
 804   DCHECK(CalledOnValidThread());
 805   if (!download_request_limiter_.get())
 806     download_request_limiter_ = new DownloadRequestLimiter();
 807   return download_request_limiter_.get();
 808 }
 809
 810 BackgroundModeManager* BrowserProcessImpl::background_mode_manager() {
 811   DCHECK(CalledOnValidThread());
 812 #if defined(ENABLE_BACKGROUND)
 813   if (!background_mode_manager_.get())
 814     CreateBackgroundModeManager();
 815   return background_mode_manager_.get();
 816 #else
 817   NOTIMPLEMENTED();
 818   return NULL;
 819 #endif
 820 }
 821
 822 void BrowserProcessImpl::set_background_mode_manager_for_test(
 823     scoped_ptr<BackgroundModeManager> manager) {
 824 #if defined(ENABLE_BACKGROUND)
 825   background_mode_manager_ = manager.Pass();
 826 #endif
 827 }
 828
 829 StatusTray* BrowserProcessImpl::status_tray() {
 830   DCHECK(CalledOnValidThread());
 831   if (!status_tray_.get())
 832     CreateStatusTray();
 833   return status_tray_.get();
 834 }
 835
 836
 837 SafeBrowsingService* BrowserProcessImpl::safe_browsing_service() {
 838   DCHECK(CalledOnValidThread());
 839   if (!created_safe_browsing_service_)
 840     CreateSafeBrowsingService();
 841   return safe_browsing_service_.get();
 842 }
 843
 844 safe_browsing::ClientSideDetectionService*
 845     BrowserProcessImpl::safe_browsing_detection_service() {
 846   DCHECK(CalledOnValidThread());
 847   if (safe_browsing_service())
 848     return safe_browsing_service()->safe_browsing_detection_service();
 849   return NULL;
 850 }
 851
 852 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 853 void BrowserProcessImpl::StartAutoupdateTimer() {
 854   autoupdate_timer_.Start(FROM_HERE,
 855       base::TimeDelta::FromHours(kUpdateCheckIntervalHours),
 856       this,
 857       &BrowserProcessImpl::OnAutoupdateTimer);
 858 }
 859 #endif
 860
 861 ChromeNetLog* BrowserProcessImpl::net_log() {
 862   return net_log_.get();
 863 }
 864
 865 prerender::PrerenderTracker* BrowserProcessImpl::prerender_tracker() {
 866   if (!prerender_tracker_.get())
 867     prerender_tracker_.reset(new prerender::PrerenderTracker);
 868
 869   return prerender_tracker_.get();
 870 }
 871
 872 component_updater::ComponentUpdateService*
 873 BrowserProcessImpl::component_updater() {
 874   if (!component_updater_.get()) {
 875     if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 876       return NULL;
 877     update_client::Configurator* configurator =
 878         component_updater::MakeChromeComponentUpdaterConfigurator(
 879             base::CommandLine::ForCurrentProcess(),
 880             io_thread()->system_url_request_context_getter());
 881     // Creating the component updater does not do anything, components
 882     // need to be registered and Start() needs to be called.
 883     component_updater_.reset(
 884         component_updater::ComponentUpdateServiceFactory(configurator));
 885   }
 886   return component_updater_.get();
 887 }
 888
 889 CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 890   if (!crl_set_fetcher_)
 891     crl_set_fetcher_ = new CRLSetFetcher();
 892   return crl_set_fetcher_.get();
 893 }
 894
 895 component_updater::PnaclComponentInstaller*
 896 BrowserProcessImpl::pnacl_component_installer() {
 897 #if !defined(DISABLE_NACL)
 898   if (!pnacl_component_installer_) {
 899     pnacl_component_installer_ =
 900         new component_updater::PnaclComponentInstaller();
 901   }
 902   return pnacl_component_installer_.get();
 903 #else
 904   return nullptr;
 905 #endif
 906 }
 907
 908 component_updater::SupervisedUserWhitelistInstaller*
 909 BrowserProcessImpl::supervised_user_whitelist_installer() {
 910   if (!supervised_user_whitelist_installer_) {
 911     supervised_user_whitelist_installer_ =
 912         component_updater::SupervisedUserWhitelistInstaller::Create(
 913             component_updater(), &profile_manager()->GetProfileInfoCache(),
 914             local_state());
 915   }
 916   return supervised_user_whitelist_installer_.get();
 917 }
 918
 919 void BrowserProcessImpl::ResourceDispatcherHostCreated() {
 920   resource_dispatcher_host_delegate_.reset(
 921       new ChromeResourceDispatcherHostDelegate(prerender_tracker()));
 922   ResourceDispatcherHost::Get()->SetDelegate(
 923       resource_dispatcher_host_delegate_.get());
 924
 925   pref_change_registrar_.Add(
 926       prefs::kAllowCrossOriginAuthPrompt,
 927       base::Bind(&BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy,
 928                  base::Unretained(this)));
 929   ApplyAllowCrossOriginAuthPromptPolicy();
 930 }
 931
 932 void BrowserProcessImpl::CreateWatchdogThread() {
 933   DCHECK(!created_watchdog_thread_ && watchdog_thread_.get() == NULL);
 934   created_watchdog_thread_ = true;
 935
 936   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
 937   base::Thread::Options options;
 938   options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 939   if (!thread->StartWithOptions(options))
 940     return;
 941   watchdog_thread_.swap(thread);
 942 }
 943
 944 void BrowserProcessImpl::CreateProfileManager() {
 945   DCHECK(!created_profile_manager_ && profile_manager_.get() == NULL);
 946   created_profile_manager_ = true;
 947
 948   base::FilePath user_data_dir;
 949   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 950   profile_manager_.reset(new ProfileManager(user_data_dir));
 951 }
 952
 953 void BrowserProcessImpl::CreateLocalState() {
 954   DCHECK(!created_local_state_ && local_state_.get() == NULL);
 955   created_local_state_ = true;
 956
 957   base::FilePath local_state_path;
 958   CHECK(PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path));
 959   scoped_refptr<PrefRegistrySimple> pref_registry = new PrefRegistrySimple;
 960
 961   // Register local state preferences.
 962   chrome::RegisterLocalState(pref_registry.get());
 963
 964   local_state_ =
 965       chrome_prefs::CreateLocalState(local_state_path,
 966                                      local_state_task_runner_.get(),
 967                                      policy_service(),
 968                                      pref_registry,
 969                                      false).Pass();
 970
 971   pref_change_registrar_.Init(local_state_.get());
 972
 973   // Initialize the notification for the default browser setting policy.
 974   pref_change_registrar_.Add(
 975       prefs::kDefaultBrowserSettingEnabled,
 976       base::Bind(&BrowserProcessImpl::ApplyDefaultBrowserPolicy,
 977                  base::Unretained(this)));
 978
 979   // This preference must be kept in sync with external values; update them
 980   // whenever the preference or its controlling policy changes.
 981 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
 982   pref_change_registrar_.Add(
 983       prefs::kMetricsReportingEnabled,
 984       base::Bind(&BrowserProcessImpl::ApplyMetricsReportingPolicy,
 985                  base::Unretained(this)));
 986 #endif
 987
 988   int max_per_proxy = local_state_->GetInteger(prefs::kMaxConnectionsPerProxy);
 989   net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
 990       net::HttpNetworkSession::NORMAL_SOCKET_POOL,
 991       std::max(std::min(max_per_proxy, 99),
 992                net::ClientSocketPoolManager::max_sockets_per_group(
 993                    net::HttpNetworkSession::NORMAL_SOCKET_POOL)));
 994 }
 995
 996 void BrowserProcessImpl::PreCreateThreads() {
 997   io_thread_.reset(
 998       new IOThread(local_state(), policy_service(), net_log_.get(),
 999                    extension_event_router_forwarder()));
1000 }
1001
1002 void BrowserProcessImpl::PreMainMessageLoopRun() {
1003   TRACE_EVENT0("startup", "BrowserProcessImpl::PreMainMessageLoopRun");
1004   SCOPED_UMA_HISTOGRAM_TIMER(
1005       "Startup.BrowserProcessImpl_PreMainMessageLoopRunTime");
1006
1007 #if defined(ENABLE_CONFIGURATION_POLICY)
1008   // browser_policy_connector() is created very early because local_state()
1009   // needs policy to be initialized with the managed preference values.
1010   // However, policy fetches from the network and loading of disk caches
1011   // requires that threads are running; this Init() call lets the connector
1012   // resume its initialization now that the loops are spinning and the
1013   // system request context is available for the fetchers.
1014   browser_policy_connector()->Init(local_state(), system_request_context());
1015 #endif
1016
1017   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled))
1018     ApplyDefaultBrowserPolicy();
1019
1020 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1021   ApplyMetricsReportingPolicy();
1022 #endif
1023
1024 #if defined(ENABLE_PLUGINS)
1025   PluginService* plugin_service = PluginService::GetInstance();
1026   plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
1027   plugin_service->StartWatchingPlugins();
1028
1029 #if defined(OS_POSIX)
1030   // Also find plugins in a user-specific plugins dir,
1031   // e.g. ~/.config/chromium/Plugins.
1032   const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess();
1033   if (!cmd_line.HasSwitch(switches::kDisablePluginsDiscovery)) {
1034     base::FilePath user_data_dir;
1035     if (PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
1036       plugin_service->AddExtraPluginDir(user_data_dir.Append("Plugins"));
1037   }
1038 #endif
1039
1040   // Triggers initialization of the singleton instance on UI thread.
1041   PluginFinder::GetInstance()->Init();
1042
1043 #if defined(ENABLE_PLUGIN_INSTALLATION)
1044   DCHECK(!plugins_resource_service_.get());
1045   plugins_resource_service_.reset(new PluginsResourceService(local_state()));
1046   plugins_resource_service_->Init();
1047 #endif
1048 #endif  // defined(ENABLE_PLUGINS)
1049
1050   const base::CommandLine& command_line =
1051       *base::CommandLine::ForCurrentProcess();
1052   if (!command_line.HasSwitch(switches::kDisableWebResources)) {
1053     DCHECK(!promo_resource_service_.get());
1054     promo_resource_service_.reset(new PromoResourceService);
1055     promo_resource_service_->StartAfterDelay();
1056   }
1057
1058 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1059   storage_monitor::StorageMonitor::Create();
1060 #endif
1061
1062   platform_part_->PreMainMessageLoopRun();
1063 }
1064
1065 void BrowserProcessImpl::CreateIconManager() {
1066   DCHECK(!created_icon_manager_ && icon_manager_.get() == NULL);
1067   created_icon_manager_ = true;
1068   icon_manager_.reset(new IconManager);
1069 }
1070
1071 void BrowserProcessImpl::CreateIntranetRedirectDetector() {
1072   DCHECK(intranet_redirect_detector_.get() == NULL);
1073   scoped_ptr<IntranetRedirectDetector> intranet_redirect_detector(
1074       new IntranetRedirectDetector);
1075   intranet_redirect_detector_.swap(intranet_redirect_detector);
1076 }
1077
1078 void BrowserProcessImpl::CreateNotificationUIManager() {
1079 #if defined(ENABLE_NOTIFICATIONS)
1080   DCHECK(notification_ui_manager_.get() == NULL);
1081   notification_ui_manager_.reset(NotificationUIManager::Create(local_state()));
1082   created_notification_ui_manager_ = true;
1083 #endif
1084 }
1085
1086 void BrowserProcessImpl::CreateBackgroundModeManager() {
1087 #if defined(ENABLE_BACKGROUND)
1088   DCHECK(background_mode_manager_.get() == NULL);
1089   background_mode_manager_.reset(
1090       new BackgroundModeManager(*base::CommandLine::ForCurrentProcess(),
1091                                 &profile_manager()->GetProfileInfoCache()));
1092 #endif
1093 }
1094
1095 void BrowserProcessImpl::CreateStatusTray() {
1096   DCHECK(status_tray_.get() == NULL);
1097   status_tray_.reset(StatusTray::Create());
1098 }
1099
1100 void BrowserProcessImpl::CreatePrintPreviewDialogController() {
1101 #if defined(ENABLE_PRINT_PREVIEW)
1102   DCHECK(print_preview_dialog_controller_.get() == NULL);
1103   print_preview_dialog_controller_ =
1104       new printing::PrintPreviewDialogController();
1105 #else
1106   NOTIMPLEMENTED();
1107 #endif
1108 }
1109
1110 void BrowserProcessImpl::CreateBackgroundPrintingManager() {
1111 #if defined(ENABLE_PRINT_PREVIEW)
1112   DCHECK(background_printing_manager_.get() == NULL);
1113   background_printing_manager_.reset(new printing::BackgroundPrintingManager());
1114 #else
1115   NOTIMPLEMENTED();
1116 #endif
1117 }
1118
1119 void BrowserProcessImpl::CreateSafeBrowsingService() {
1120   DCHECK(safe_browsing_service_.get() == NULL);
1121   // Set this flag to true so that we don't retry indefinitely to
1122   // create the service class if there was an error.
1123   created_safe_browsing_service_ = true;
1124 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
1125   safe_browsing_service_ = SafeBrowsingService::CreateSafeBrowsingService();
1126   safe_browsing_service_->Initialize();
1127 #endif
1128 }
1129
1130 void BrowserProcessImpl::CreateGCMDriver() {
1131   DCHECK(!gcm_driver_);
1132
1133 #if defined(OS_ANDROID)
1134   // Android's GCMDriver currently makes the assumption that it's a singleton.
1135   // Until this gets fixed, instantiating multiple Java GCMDrivers will throw
1136   // an exception, but because they're only initialized on demand these crashes
1137   // would be very difficult to triage. See http://crbug.com/437827.
1138   NOTREACHED();
1139 #else
1140   base::FilePath store_path;
1141   CHECK(PathService::Get(chrome::DIR_GLOBAL_GCM_STORE, &store_path));
1142   gcm_driver_ = gcm::CreateGCMDriverDesktop(
1143       make_scoped_ptr(new gcm::GCMClientFactory),
1144       local_state(),
1145       store_path,
1146       system_request_context());
1147 #endif  // defined(OS_ANDROID)
1148 }
1149
1150 void BrowserProcessImpl::ApplyDefaultBrowserPolicy() {
1151   if (local_state()->GetBoolean(prefs::kDefaultBrowserSettingEnabled)) {
1152     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
1153         set_browser_worker = new ShellIntegration::DefaultBrowserWorker(NULL);
1154     set_browser_worker->StartSetAsDefault();
1155   }
1156 }
1157
1158 void BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy() {
1159   bool value = local_state()->GetBoolean(prefs::kAllowCrossOriginAuthPrompt);
1160   ResourceDispatcherHost::Get()->SetAllowCrossOriginAuthPrompt(value);
1161 }
1162
1163 void BrowserProcessImpl::ApplyMetricsReportingPolicy() {
1164 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1165   CHECK(BrowserThread::PostTask(
1166       BrowserThread::FILE, FROM_HERE,
1167       base::Bind(
1168           base::IgnoreResult(&GoogleUpdateSettings::SetCollectStatsConsent),
1169           local_state()->GetBoolean(prefs::kMetricsReportingEnabled))));
1170 #endif
1171 }
1172
1173 // Mac is currently not supported.
1174 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
1175
1176 bool BrowserProcessImpl::CanAutorestartForUpdate() const {
1177   // Check if browser is in the background and if it needs to be restarted to
1178   // apply a pending update.
1179   return chrome::GetTotalBrowserCount() == 0 && chrome::WillKeepAlive() &&
1180          upgrade_util::IsUpdatePendingRestart();
1181 }
1182
1183 // Switches to add when auto-restarting Chrome.
1184 const char* const kSwitchesToAddOnAutorestart[] = {
1185   switches::kNoStartupWindow
1186 };
1187
1188 void BrowserProcessImpl::RestartBackgroundInstance() {
1189   base::CommandLine* old_cl = base::CommandLine::ForCurrentProcess();
1190   scoped_ptr<base::CommandLine> new_cl(
1191       new base::CommandLine(old_cl->GetProgram()));
1192
1193   std::map<std::string, base::CommandLine::StringType> switches =
1194       old_cl->GetSwitches();
1195
1196   switches::RemoveSwitchesForAutostart(&switches);
1197
1198   // Append the rest of the switches (along with their values, if any)
1199   // to the new command line
1200   for (std::map<std::string, base::CommandLine::StringType>::const_iterator i =
1201            switches.begin();
1202        i != switches.end(); ++i) {
1203     base::CommandLine::StringType switch_value = i->second;
1204       if (switch_value.length() > 0) {
1205         new_cl->AppendSwitchNative(i->first, i->second);
1206       } else {
1207         new_cl->AppendSwitch(i->first);
1208       }
1209   }
1210
1211   // Ensure that our desired switches are set on the new process.
1212   for (size_t i = 0; i < arraysize(kSwitchesToAddOnAutorestart); ++i) {
1213     if (!new_cl->HasSwitch(kSwitchesToAddOnAutorestart[i]))
1214       new_cl->AppendSwitch(kSwitchesToAddOnAutorestart[i]);
1215   }
1216
1217   DLOG(WARNING) << "Shutting down current instance of the browser.";
1218   chrome::AttemptExit();
1219
1220   // Transfer ownership to Upgrade.
1221   upgrade_util::SetNewCommandLine(new_cl.release());
1222 }
1223
1224 void BrowserProcessImpl::OnAutoupdateTimer() {
1225   if (CanAutorestartForUpdate()) {
1226     DLOG(WARNING) << "Detected update.  Restarting browser.";
1227     RestartBackgroundInstance();
1228   }
1229 }
1230
1231 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)