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_child_process_watcher.h"
  31 #include "chrome/browser/chrome_content_browser_client.h"
  32 #include "chrome/browser/chrome_notification_types.h"
  33 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
  34 #include "chrome/browser/component_updater/supervised_user_whitelist_installer.h"
  35 #include "chrome/browser/defaults.h"
  36 #include "chrome/browser/devtools/remote_debugging_server.h"
  37 #include "chrome/browser/download/download_request_limiter.h"
  38 #include "chrome/browser/download/download_status_updater.h"
  39 #include "chrome/browser/first_run/upgrade_util.h"
  40 #include "chrome/browser/gpu/gl_string_manager.h"
  41 #include "chrome/browser/gpu/gpu_mode_manager.h"
  42 #include "chrome/browser/icon_manager.h"
  43 #include "chrome/browser/intranet_redirect_detector.h"
  44 #include "chrome/browser/io_thread.h"
  45 #include "chrome/browser/lifetime/application_lifetime.h"
  46 #include "chrome/browser/metrics/metrics_services_manager.h"
  47 #include "chrome/browser/metrics/thread_watcher.h"
  48 #include "chrome/browser/net/chrome_net_log.h"
  49 #include "chrome/browser/net/crl_set_fetcher.h"
  50 #include "chrome/browser/notifications/notification_ui_manager.h"
  51 #include "chrome/browser/plugins/chrome_plugin_service_filter.h"
  52 #include "chrome/browser/plugins/plugin_finder.h"
  53 #include "chrome/browser/prefs/browser_prefs.h"
  54 #include "chrome/browser/prefs/chrome_pref_service_factory.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/common/channel_info.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/safe_json/safe_json_parser.h"
  83 #include "components/signin/core/common/profile_management_switches.h"
  84 #include "components/translate/core/browser/translate_download_manager.h"
  85 #include "components/update_client/update_query_params.h"
  86 #include "components/web_resource/promo_resource_service.h"
  87 #include "components/web_resource/web_resource_pref_names.h"
  88 #include "content/public/browser/browser_thread.h"
  89 #include "content/public/browser/child_process_security_policy.h"
  90 #include "content/public/browser/notification_details.h"
  91 #include "content/public/browser/plugin_service.h"
  92 #include "content/public/browser/render_process_host.h"
  93 #include "content/public/browser/resource_dispatcher_host.h"
  94 #include "content/public/browser/service_worker_context.h"
  95 #include "content/public/browser/storage_partition.h"
  96 #include "extensions/common/constants.h"
  97 #include "net/socket/client_socket_pool_manager.h"
  98 #include "net/url_request/url_request_context_getter.h"
  99 #include "ui/base/idle/idle.h"
 100 #include "ui/base/l10n/l10n_util.h"
 101 #include "ui/message_center/message_center.h"
 102
 103 #if defined(OS_WIN)
 104 #include "base/win/windows_version.h"
 105 #include "ui/views/focus/view_storage.h"
 106 #elif defined(OS_MACOSX)
 107 #include "chrome/browser/chrome_browser_main_mac.h"
 108 #endif
 109
 110 #if !defined(OS_ANDROID)
 111 #include "chrome/browser/chrome_device_client.h"
 112 #include "chrome/browser/services/gcm/gcm_desktop_utils.h"
 113 #include "components/gcm_driver/gcm_client_factory.h"
 114 #endif
 115
 116 #if defined(ENABLE_BACKGROUND)
 117 #include "chrome/browser/background/background_mode_manager.h"
 118 #endif
 119
 120 #if defined(ENABLE_CONFIGURATION_POLICY)
 121 #include "components/policy/core/browser/browser_policy_connector.h"
 122 #else
 123 #include "components/policy/core/common/policy_service_stub.h"
 124 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 125
 126 #if defined(ENABLE_EXTENSIONS)
 127 #include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 128 #include "chrome/browser/extensions/event_router_forwarder.h"
 129 #include "chrome/browser/extensions/extension_renderer_state.h"
 130 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 131 #include "chrome/browser/ui/apps/chrome_app_window_client.h"
 132 #include "components/storage_monitor/storage_monitor.h"
 133 #include "extensions/common/extension_l10n_util.h"
 134 #endif
 135
 136 #if !defined(DISABLE_NACL)
 137 #include "chrome/browser/component_updater/pnacl_component_installer.h"
 138 #endif
 139
 140 #if defined(ENABLE_PLUGIN_INSTALLATION)
 141 #include "chrome/browser/plugins/plugins_resource_service.h"
 142 #endif
 143
 144 #if defined(ENABLE_WEBRTC)
 145 #include "chrome/browser/media/webrtc_log_uploader.h"
 146 #endif
 147
 148 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
 149 #include "chrome/browser/memory/oom_priority_manager.h"
 150 #endif
 151
 152 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 153 // How often to check if the persistent instance of Chrome needs to restart
 154 // to install an update.
 155 static const int kUpdateCheckIntervalHours = 6;
 156 #endif
 157
 158 #if defined(USE_X11) || defined(OS_WIN) || defined(USE_OZONE)
 159 // How long to wait for the File thread to complete during EndSession, on Linux
 160 // and Windows. We have a timeout here because we're unable to run the UI
 161 // messageloop and there's some deadlock risk. Our only option is to exit
 162 // anyway.
 163 static const int kEndSessionTimeoutSeconds = 10;
 164 #endif
 165
 166 using content::BrowserThread;
 167 using content::ChildProcessSecurityPolicy;
 168 using content::PluginService;
 169 using content::ResourceDispatcherHost;
 170
 171 BrowserProcessImpl::BrowserProcessImpl(
 172     base::SequencedTaskRunner* local_state_task_runner,
 173     const base::CommandLine& command_line)
 174     : created_watchdog_thread_(false),
 175       created_browser_policy_connector_(false),
 176       created_profile_manager_(false),
 177       created_local_state_(false),
 178       created_icon_manager_(false),
 179       created_notification_ui_manager_(false),
 180       created_safe_browsing_service_(false),
 181       module_ref_count_(0),
 182       did_start_(false),
 183       download_status_updater_(new DownloadStatusUpdater),
 184       local_state_task_runner_(local_state_task_runner),
 185       cached_default_web_client_state_(ShellIntegration::UNKNOWN_DEFAULT) {
 186   g_browser_process = this;
 187   platform_part_.reset(new BrowserProcessPlatformPart());
 188
 189 #if defined(ENABLE_PRINTING)
 190   // Must be created after the NotificationService.
 191   print_job_manager_.reset(new printing::PrintJobManager);
 192 #endif
 193
 194   net_log_.reset(new ChromeNetLog);
 195
 196   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 197       extensions::kExtensionScheme);
 198   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 199       extensions::kExtensionResourceScheme);
 200   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 201       chrome::kChromeSearchScheme);
 202
 203 #if defined(OS_MACOSX)
 204   ui::InitIdleMonitor();
 205 #endif
 206
 207 #if !defined(OS_ANDROID)
 208   device_client_.reset(new ChromeDeviceClient);
 209 #endif
 210
 211 #if defined(ENABLE_EXTENSIONS)
 212   // Athena sets its own instance during Athena's init process.
 213   extensions::AppWindowClient::Set(ChromeAppWindowClient::GetInstance());
 214
 215   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
 216   ExtensionRendererState::GetInstance()->Init();
 217
 218   extensions::ExtensionsClient::Set(
 219       extensions::ChromeExtensionsClient::GetInstance());
 220
 221   extensions_browser_client_.reset(
 222       new extensions::ChromeExtensionsBrowserClient);
 223   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
 224 #endif
 225
 226   message_center::MessageCenter::Initialize();
 227
 228   update_client::UpdateQueryParams::SetDelegate(
 229       ChromeUpdateQueryParamsDelegate::GetInstance());
 230 }
 231
 232 BrowserProcessImpl::~BrowserProcessImpl() {
 233   tracked_objects::ThreadData::EnsureCleanupWasCalled(4);
 234
 235   g_browser_process = NULL;
 236 }
 237
 238 void BrowserProcessImpl::StartTearDown() {
 239     TRACE_EVENT0("shutdown", "BrowserProcessImpl::StartTearDown");
 240   // We need to destroy the MetricsServicesManager, IntranetRedirectDetector,
 241   // PromoResourceService, and SafeBrowsing ClientSideDetectionService (owned by
 242   // the SafeBrowsingService) before the io_thread_ gets destroyed, since their
 243   // destructors can call the URLFetcher destructor, which does a
 244   // PostDelayedTask operation on the IO thread. (The IO thread will handle that
 245   // URLFetcher operation before going away.)
 246   metrics_services_manager_.reset();
 247   intranet_redirect_detector_.reset();
 248 #if defined(SAFE_BROWSING_SERVICE)
 249   if (safe_browsing_service_.get())
 250     safe_browsing_service()->ShutDown();
 251 #endif
 252 #if defined(ENABLE_PLUGIN_INSTALLATION)
 253   plugins_resource_service_.reset();
 254 #endif
 255
 256   // Need to clear the desktop notification balloons before the io_thread_ and
 257   // before the profiles, since if there are any still showing we will access
 258   // those things during teardown.
 259   notification_ui_manager_.reset();
 260
 261   // The SupervisedUserWhitelistInstaller observes the ProfileInfoCache, so it
 262   // needs to be shut down before the ProfileManager.
 263   supervised_user_whitelist_installer_.reset();
 264
 265 #if !defined(OS_ANDROID)
 266   // Debugger must be cleaned up before ProfileManager.
 267   remote_debugging_server_.reset();
 268 #endif
 269
 270   // Need to clear profiles (download managers) before the io_thread_.
 271   {
 272     TRACE_EVENT0("shutdown",
 273                  "BrowserProcessImpl::StartTearDown:ProfileManager");
 274     // The desktop User Manager needs to be closed before the guest profile
 275     // can be destroyed.
 276     if (switches::IsNewAvatarMenu())
 277       UserManager::Hide();
 278     profile_manager_.reset();
 279   }
 280
 281   // PromoResourceService must be destroyed after the keyed services and before
 282   // the IO thread.
 283   promo_resource_service_.reset();
 284
 285   child_process_watcher_.reset();
 286
 287 #if defined(ENABLE_EXTENSIONS)
 288   ExtensionRendererState::GetInstance()->Shutdown();
 289
 290   media_file_system_registry_.reset();
 291   // Remove the global instance of the Storage Monitor now. Otherwise the
 292   // FILE thread would be gone when we try to release it in the dtor and
 293   // Valgrind would report a leak on almost every single browser_test.
 294   // TODO(gbillock): Make this unnecessary.
 295   storage_monitor::StorageMonitor::Destroy();
 296 #endif
 297
 298   message_center::MessageCenter::Shutdown();
 299
 300 #if defined(ENABLE_CONFIGURATION_POLICY)
 301   // The policy providers managed by |browser_policy_connector_| need to shut
 302   // down while the IO and FILE threads are still alive. The monitoring
 303   // framework owned by |browser_policy_connector_| relies on |gcm_driver_|, so
 304   // this must be shutdown before |gcm_driver_| below.
 305   if (browser_policy_connector_)
 306     browser_policy_connector_->Shutdown();
 307 #endif
 308
 309   // The |gcm_driver_| must shut down while the IO thread is still alive.
 310   if (gcm_driver_)
 311     gcm_driver_->Shutdown();
 312
 313   // Stop the watchdog thread before stopping other threads.
 314   watchdog_thread_.reset();
 315
 316   platform_part()->StartTearDown();
 317
 318 #if defined(ENABLE_WEBRTC)
 319   // Cancel any uploads to release the system url request context references.
 320   if (webrtc_log_uploader_)
 321     webrtc_log_uploader_->StartShutdown();
 322 #endif
 323
 324   if (local_state())
 325     local_state()->CommitPendingWrite();
 326 }
 327
 328 void BrowserProcessImpl::PostDestroyThreads() {
 329   // With the file_thread_ flushed, we can release any icon resources.
 330   icon_manager_.reset();
 331
 332 #if defined(ENABLE_WEBRTC)
 333   // Must outlive the file thread.
 334   webrtc_log_uploader_.reset();
 335 #endif
 336
 337   // Reset associated state right after actual thread is stopped,
 338   // as io_thread_.global_ cleanup happens in CleanUp on the IO
 339   // thread, i.e. as the thread exits its message loop.
 340   //
 341   // This is important also because in various places, the
 342   // IOThread object being NULL is considered synonymous with the
 343   // IO thread having stopped.
 344   io_thread_.reset();
 345 }
 346
 347 unsigned int BrowserProcessImpl::AddRefModule() {
 348   DCHECK(CalledOnValidThread());
 349
 350   // CHECK(!IsShuttingDown());
 351   if (IsShuttingDown()) {
 352     // Copy the stacktrace which released the final reference onto our stack so
 353     // it will be available in the crash report for inspection.
 354     base::debug::StackTrace callstack = release_last_reference_callstack_;
 355     base::debug::Alias(&callstack);
 356     CHECK(false);
 357   }
 358
 359   did_start_ = true;
 360   module_ref_count_++;
 361   return module_ref_count_;
 362 }
 363
 364 unsigned int BrowserProcessImpl::ReleaseModule() {
 365   DCHECK(CalledOnValidThread());
 366   DCHECK_NE(0u, module_ref_count_);
 367   module_ref_count_--;
 368   if (0 == module_ref_count_) {
 369     release_last_reference_callstack_ = base::debug::StackTrace();
 370
 371 #if defined(ENABLE_PRINTING)
 372     // Wait for the pending print jobs to finish. Don't do this later, since
 373     // this might cause a nested message loop to run, and we don't want pending
 374     // tasks to run once teardown has started.
 375     print_job_manager_->Shutdown();
 376 #endif
 377
 378 #if defined(LEAK_SANITIZER)
 379     // Check for memory leaks now, before we start shutting down threads. Doing
 380     // this early means we won't report any shutdown-only leaks (as they have
 381     // not yet happened at this point).
 382     // If leaks are found, this will make the process exit immediately.
 383     __lsan_do_leak_check();
 384 #endif
 385
 386     CHECK(base::MessageLoop::current()->is_running());
 387
 388 #if defined(OS_MACOSX)
 389     base::MessageLoop::current()->PostTask(
 390         FROM_HERE,
 391         base::Bind(ChromeBrowserMainPartsMac::DidEndMainMessageLoop));
 392 #endif
 393     base::MessageLoop::current()->Quit();
 394   }
 395   return module_ref_count_;
 396 }
 397
 398 namespace {
 399
 400 // Used at the end of session to block the UI thread for completion of sentinel
 401 // tasks on the set of threads used to persist profile data and local state.
 402 // This is done to ensure that the data has been persisted to disk before
 403 // continuing.
 404 class RundownTaskCounter :
 405     public base::RefCountedThreadSafe<RundownTaskCounter> {
 406  public:
 407   RundownTaskCounter();
 408
 409   // Posts a rundown task to |task_runner|, can be invoked an arbitrary number
 410   // of times before calling TimedWait.
 411   void Post(base::SequencedTaskRunner* task_runner);
 412
 413   // Waits until the count is zero or |max_time| has passed.
 414   // This can only be called once per instance.
 415   bool TimedWait(const base::TimeDelta& max_time);
 416
 417  private:
 418   friend class base::RefCountedThreadSafe<RundownTaskCounter>;
 419   ~RundownTaskCounter() {}
 420
 421   // Decrements the counter and releases the waitable event on transition to
 422   // zero.
 423   void Decrement();
 424
 425   // The count starts at one to defer the possibility of one->zero transitions
 426   // until TimedWait is called.
 427   base::AtomicRefCount count_;
 428   base::WaitableEvent waitable_event_;
 429
 430   DISALLOW_COPY_AND_ASSIGN(RundownTaskCounter);
 431 };
 432
 433 RundownTaskCounter::RundownTaskCounter()
 434     : count_(1), waitable_event_(true, false) {
 435 }
 436
 437 void RundownTaskCounter::Post(base::SequencedTaskRunner* task_runner) {
 438   // As the count starts off at one, it should never get to zero unless
 439   // TimedWait has been called.
 440   DCHECK(!base::AtomicRefCountIsZero(&count_));
 441
 442   base::AtomicRefCountInc(&count_);
 443
 444   // The task must be non-nestable to guarantee that it runs after all tasks
 445   // currently scheduled on |task_runner| have completed.
 446   task_runner->PostNonNestableTask(FROM_HERE,
 447       base::Bind(&RundownTaskCounter::Decrement, this));
 448 }
 449
 450 void RundownTaskCounter::Decrement() {
 451   if (!base::AtomicRefCountDec(&count_))
 452     waitable_event_.Signal();
 453 }
 454
 455 bool RundownTaskCounter::TimedWait(const base::TimeDelta& max_time) {
 456   // Decrement the excess count from the constructor.
 457   Decrement();
 458
 459   return waitable_event_.TimedWait(max_time);
 460 }
 461
 462 }  // namespace
 463
 464 void BrowserProcessImpl::EndSession() {
 465   // Mark all the profiles as clean.
 466   ProfileManager* pm = profile_manager();
 467   std::vector<Profile*> profiles(pm->GetLoadedProfiles());
 468   scoped_refptr<RundownTaskCounter> rundown_counter(new RundownTaskCounter());
 469   for (size_t i = 0; i < profiles.size(); ++i) {
 470     Profile* profile = profiles[i];
 471     profile->SetExitType(Profile::EXIT_SESSION_ENDED);
 472     if (profile->GetPrefs()) {
 473       profile->GetPrefs()->CommitPendingWrite();
 474       rundown_counter->Post(profile->GetIOTaskRunner().get());
 475     }
 476   }
 477
 478   // Tell the metrics service it was cleanly shutdown.
 479   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 480   if (metrics && local_state()) {
 481     metrics->RecordStartOfSessionEnd();
 482 #if !defined(OS_CHROMEOS)
 483     // MetricsService lazily writes to prefs, force it to write now.
 484     // On ChromeOS, chrome gets killed when hangs, so no need to
 485     // commit metrics::prefs::kStabilitySessionEndCompleted change immediately.
 486     local_state()->CommitPendingWrite();
 487
 488     rundown_counter->Post(local_state_task_runner_.get());
 489 #endif
 490   }
 491
 492   // http://crbug.com/125207
 493   base::ThreadRestrictions::ScopedAllowWait allow_wait;
 494
 495   // We must write that the profile and metrics service shutdown cleanly,
 496   // otherwise on startup we'll think we crashed. So we block until done and
 497   // then proceed with normal shutdown.
 498   //
 499   // If you change the condition here, be sure to also change
 500   // ProfileBrowserTests to match.
 501 #if defined(USE_X11) || defined(OS_WIN) || defined(USE_OZONE)
 502   // Do a best-effort wait on the successful countdown of rundown tasks. Note
 503   // that if we don't complete "quickly enough", Windows will terminate our
 504   // process.
 505   //
 506   // On Windows, we previously posted a message to FILE and then ran a nested
 507   // message loop, waiting for that message to be processed until quitting.
 508   // However, doing so means that other messages will also be processed. In
 509   // particular, if the GPU process host notices that the GPU has been killed
 510   // during shutdown, it races exiting the nested loop with the process host
 511   // blocking the message loop attempting to re-establish a connection to the
 512   // GPU process synchronously. Because the system may not be allowing
 513   // processes to launch, this can result in a hang. See
 514   // http://crbug.com/318527.
 515   rundown_counter->TimedWait(
 516       base::TimeDelta::FromSeconds(kEndSessionTimeoutSeconds));
 517 #else
 518   NOTIMPLEMENTED();
 519 #endif
 520 }
 521
 522 MetricsServicesManager* BrowserProcessImpl::GetMetricsServicesManager() {
 523   DCHECK(CalledOnValidThread());
 524   if (!metrics_services_manager_)
 525     metrics_services_manager_.reset(new MetricsServicesManager(local_state()));
 526   return metrics_services_manager_.get();
 527 }
 528
 529 metrics::MetricsService* BrowserProcessImpl::metrics_service() {
 530   DCHECK(CalledOnValidThread());
 531   return GetMetricsServicesManager()->GetMetricsService();
 532 }
 533
 534 rappor::RapporService* BrowserProcessImpl::rappor_service() {
 535   DCHECK(CalledOnValidThread());
 536   return GetMetricsServicesManager()->GetRapporService();
 537 }
 538
 539 IOThread* BrowserProcessImpl::io_thread() {
 540   DCHECK(CalledOnValidThread());
 541   DCHECK(io_thread_.get());
 542   return io_thread_.get();
 543 }
 544
 545 WatchDogThread* BrowserProcessImpl::watchdog_thread() {
 546   DCHECK(CalledOnValidThread());
 547   if (!created_watchdog_thread_)
 548     CreateWatchdogThread();
 549   DCHECK(watchdog_thread_.get() != NULL);
 550   return watchdog_thread_.get();
 551 }
 552
 553 ProfileManager* BrowserProcessImpl::profile_manager() {
 554   DCHECK(CalledOnValidThread());
 555   if (!created_profile_manager_)
 556     CreateProfileManager();
 557   return profile_manager_.get();
 558 }
 559
 560 PrefService* BrowserProcessImpl::local_state() {
 561   DCHECK(CalledOnValidThread());
 562   if (!created_local_state_)
 563     CreateLocalState();
 564   return local_state_.get();
 565 }
 566
 567 net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 568   DCHECK(CalledOnValidThread());
 569   return io_thread()->system_url_request_context_getter();
 570 }
 571
 572 variations::VariationsService* BrowserProcessImpl::variations_service() {
 573   DCHECK(CalledOnValidThread());
 574   return GetMetricsServicesManager()->GetVariationsService();
 575 }
 576
 577 web_resource::PromoResourceService*
 578 BrowserProcessImpl::promo_resource_service() {
 579   DCHECK(CalledOnValidThread());
 580   return promo_resource_service_.get();
 581 }
 582
 583 BrowserProcessPlatformPart* BrowserProcessImpl::platform_part() {
 584   return platform_part_.get();
 585 }
 586
 587 extensions::EventRouterForwarder*
 588 BrowserProcessImpl::extension_event_router_forwarder() {
 589 #if defined(ENABLE_EXTENSIONS)
 590   return extension_event_router_forwarder_.get();
 591 #else
 592   return NULL;
 593 #endif
 594 }
 595
 596 NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 597   DCHECK(CalledOnValidThread());
 598   if (!created_notification_ui_manager_)
 599     CreateNotificationUIManager();
 600   return notification_ui_manager_.get();
 601 }
 602
 603 message_center::MessageCenter* BrowserProcessImpl::message_center() {
 604   DCHECK(CalledOnValidThread());
 605   return message_center::MessageCenter::Get();
 606 }
 607
 608 policy::BrowserPolicyConnector* BrowserProcessImpl::browser_policy_connector() {
 609   DCHECK(CalledOnValidThread());
 610 #if defined(ENABLE_CONFIGURATION_POLICY)
 611   if (!created_browser_policy_connector_) {
 612     DCHECK(!browser_policy_connector_);
 613     browser_policy_connector_ = platform_part_->CreateBrowserPolicyConnector();
 614     created_browser_policy_connector_ = true;
 615   }
 616   return browser_policy_connector_.get();
 617 #else
 618   return NULL;
 619 #endif
 620 }
 621
 622 policy::PolicyService* BrowserProcessImpl::policy_service() {
 623 #if defined(ENABLE_CONFIGURATION_POLICY)
 624   return browser_policy_connector()->GetPolicyService();
 625 #else
 626   if (!policy_service_.get())
 627     policy_service_.reset(new policy::PolicyServiceStub());
 628   return policy_service_.get();
 629 #endif
 630 }
 631
 632 IconManager* BrowserProcessImpl::icon_manager() {
 633   DCHECK(CalledOnValidThread());
 634   if (!created_icon_manager_)
 635     CreateIconManager();
 636   return icon_manager_.get();
 637 }
 638
 639 GLStringManager* BrowserProcessImpl::gl_string_manager() {
 640   DCHECK(CalledOnValidThread());
 641   if (!gl_string_manager_.get())
 642     gl_string_manager_.reset(new GLStringManager());
 643   return gl_string_manager_.get();
 644 }
 645
 646 GpuModeManager* BrowserProcessImpl::gpu_mode_manager() {
 647   DCHECK(CalledOnValidThread());
 648   if (!gpu_mode_manager_.get())
 649     gpu_mode_manager_.reset(new GpuModeManager());
 650   return gpu_mode_manager_.get();
 651 }
 652
 653 void BrowserProcessImpl::CreateDevToolsHttpProtocolHandler(
 654     chrome::HostDesktopType host_desktop_type,
 655     const std::string& ip,
 656     uint16 port) {
 657   DCHECK(CalledOnValidThread());
 658 #if !defined(OS_ANDROID)
 659   // StartupBrowserCreator::LaunchBrowser can be run multiple times when browser
 660   // is started with several profiles or existing browser process is reused.
 661   if (!remote_debugging_server_.get()) {
 662     remote_debugging_server_.reset(
 663         new RemoteDebuggingServer(host_desktop_type, ip, port));
 664   }
 665 #endif
 666 }
 667
 668 bool BrowserProcessImpl::IsShuttingDown() {
 669   DCHECK(CalledOnValidThread());
 670   return did_start_ && 0 == module_ref_count_;
 671 }
 672
 673 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
 674   DCHECK(CalledOnValidThread());
 675   return print_job_manager_.get();
 676 }
 677
 678 printing::PrintPreviewDialogController*
 679     BrowserProcessImpl::print_preview_dialog_controller() {
 680 #if defined(ENABLE_PRINT_PREVIEW)
 681   DCHECK(CalledOnValidThread());
 682   if (!print_preview_dialog_controller_.get())
 683     CreatePrintPreviewDialogController();
 684   return print_preview_dialog_controller_.get();
 685 #else
 686   NOTIMPLEMENTED();
 687   return NULL;
 688 #endif
 689 }
 690
 691 printing::BackgroundPrintingManager*
 692     BrowserProcessImpl::background_printing_manager() {
 693 #if defined(ENABLE_PRINT_PREVIEW)
 694   DCHECK(CalledOnValidThread());
 695   if (!background_printing_manager_.get())
 696     CreateBackgroundPrintingManager();
 697   return background_printing_manager_.get();
 698 #else
 699   NOTIMPLEMENTED();
 700   return NULL;
 701 #endif
 702 }
 703
 704 IntranetRedirectDetector* BrowserProcessImpl::intranet_redirect_detector() {
 705   DCHECK(CalledOnValidThread());
 706   if (!intranet_redirect_detector_.get())
 707     CreateIntranetRedirectDetector();
 708   return intranet_redirect_detector_.get();
 709 }
 710
 711 const std::string& BrowserProcessImpl::GetApplicationLocale() {
 712   DCHECK(!locale_.empty());
 713   return locale_;
 714 }
 715
 716 void BrowserProcessImpl::SetApplicationLocale(const std::string& locale) {
 717   locale_ = locale;
 718 #if defined(ENABLE_EXTENSIONS)
 719   extension_l10n_util::SetProcessLocale(locale);
 720 #endif
 721   chrome::ChromeContentBrowserClient::SetApplicationLocale(locale);
 722   translate::TranslateDownloadManager::GetInstance()->set_application_locale(
 723       locale);
 724 }
 725
 726 DownloadStatusUpdater* BrowserProcessImpl::download_status_updater() {
 727   return download_status_updater_.get();
 728 }
 729
 730 MediaFileSystemRegistry* BrowserProcessImpl::media_file_system_registry() {
 731 #if defined(ENABLE_EXTENSIONS)
 732   if (!media_file_system_registry_)
 733     media_file_system_registry_.reset(new MediaFileSystemRegistry());
 734   return media_file_system_registry_.get();
 735 #else
 736   return NULL;
 737 #endif
 738 }
 739
 740 bool BrowserProcessImpl::created_local_state() const {
 741   return created_local_state_;
 742 }
 743
 744 #if defined(ENABLE_WEBRTC)
 745 WebRtcLogUploader* BrowserProcessImpl::webrtc_log_uploader() {
 746   if (!webrtc_log_uploader_.get())
 747     webrtc_log_uploader_.reset(new WebRtcLogUploader());
 748   return webrtc_log_uploader_.get();
 749 }
 750 #endif
 751
 752 network_time::NetworkTimeTracker* BrowserProcessImpl::network_time_tracker() {
 753   if (!network_time_tracker_) {
 754     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
 755         scoped_ptr<base::TickClock>(new base::DefaultTickClock()),
 756         local_state()));
 757   }
 758   return network_time_tracker_.get();
 759 }
 760
 761 gcm::GCMDriver* BrowserProcessImpl::gcm_driver() {
 762   DCHECK(CalledOnValidThread());
 763   if (!gcm_driver_)
 764     CreateGCMDriver();
 765   return gcm_driver_.get();
 766 }
 767
 768 memory::OomPriorityManager* BrowserProcessImpl::GetOomPriorityManager() {
 769   DCHECK(CalledOnValidThread());
 770 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
 771   if (!oom_priority_manager_.get())
 772     oom_priority_manager_.reset(new memory::OomPriorityManager());
 773   return oom_priority_manager_.get();
 774 #else
 775   return nullptr;
 776 #endif
 777 }
 778
 779 ShellIntegration::DefaultWebClientState
 780 BrowserProcessImpl::CachedDefaultWebClientState() {
 781   return cached_default_web_client_state_;
 782 }
 783
 784 // static
 785 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
 786   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
 787                                 false);
 788   // This policy needs to be defined before the net subsystem is initialized,
 789   // so we do it here.
 790   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
 791                                 net::kDefaultMaxSocketsPerProxyServer);
 792
 793   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 794
 795 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 796   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 797 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 798 #if defined(OS_WIN)
 799   if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
 800     registry->RegisterStringPref(prefs::kRelaunchMode,
 801                                  upgrade_util::kRelaunchModeDefault);
 802   }
 803 #endif
 804
 805   // TODO(brettw,*): this comment about ResourceBundle was here since
 806   // initial commit.  This comment seems unrelated, bit-rotten and
 807   // a candidate for removal.
 808   // Initialize ResourceBundle which handles files loaded from external
 809   // sources. This has to be done before uninstall code path and before prefs
 810   // are registered.
 811   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 812 #if defined(OS_CHROMEOS)
 813   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
 814   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
 815                                std::string());
 816 #endif  // defined(OS_CHROMEOS)
 817 #if !defined(OS_CHROMEOS)
 818   registry->RegisterBooleanPref(
 819       prefs::kMetricsReportingEnabled,
 820       GoogleUpdateSettings::GetCollectStatsConsent());
 821 #endif  // !defined(OS_CHROMEOS)
 822
 823 #if defined(OS_ANDROID)
 824   registry->RegisterBooleanPref(
 825       prefs::kCrashReportingEnabled, false);
 826 #endif  // defined(OS_ANDROID)
 827 }
 828
 829 DownloadRequestLimiter* BrowserProcessImpl::download_request_limiter() {
 830   DCHECK(CalledOnValidThread());
 831   if (!download_request_limiter_.get())
 832     download_request_limiter_ = new DownloadRequestLimiter();
 833   return download_request_limiter_.get();
 834 }
 835
 836 BackgroundModeManager* BrowserProcessImpl::background_mode_manager() {
 837   DCHECK(CalledOnValidThread());
 838 #if defined(ENABLE_BACKGROUND)
 839   if (!background_mode_manager_.get())
 840     CreateBackgroundModeManager();
 841   return background_mode_manager_.get();
 842 #else
 843   NOTIMPLEMENTED();
 844   return NULL;
 845 #endif
 846 }
 847
 848 void BrowserProcessImpl::set_background_mode_manager_for_test(
 849     scoped_ptr<BackgroundModeManager> manager) {
 850 #if defined(ENABLE_BACKGROUND)
 851   background_mode_manager_ = manager.Pass();
 852 #endif
 853 }
 854
 855 StatusTray* BrowserProcessImpl::status_tray() {
 856   DCHECK(CalledOnValidThread());
 857   if (!status_tray_.get())
 858     CreateStatusTray();
 859   return status_tray_.get();
 860 }
 861
 862
 863 SafeBrowsingService* BrowserProcessImpl::safe_browsing_service() {
 864   DCHECK(CalledOnValidThread());
 865   if (!created_safe_browsing_service_)
 866     CreateSafeBrowsingService();
 867   return safe_browsing_service_.get();
 868 }
 869
 870 safe_browsing::ClientSideDetectionService*
 871     BrowserProcessImpl::safe_browsing_detection_service() {
 872   DCHECK(CalledOnValidThread());
 873   if (safe_browsing_service())
 874     return safe_browsing_service()->safe_browsing_detection_service();
 875   return NULL;
 876 }
 877
 878 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 879 void BrowserProcessImpl::StartAutoupdateTimer() {
 880   autoupdate_timer_.Start(FROM_HERE,
 881       base::TimeDelta::FromHours(kUpdateCheckIntervalHours),
 882       this,
 883       &BrowserProcessImpl::OnAutoupdateTimer);
 884 }
 885 #endif
 886
 887 ChromeNetLog* BrowserProcessImpl::net_log() {
 888   return net_log_.get();
 889 }
 890
 891 component_updater::ComponentUpdateService*
 892 BrowserProcessImpl::component_updater() {
 893   if (!component_updater_.get()) {
 894     if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 895       return NULL;
 896     scoped_refptr<update_client::Configurator> configurator =
 897         component_updater::MakeChromeComponentUpdaterConfigurator(
 898             base::CommandLine::ForCurrentProcess(),
 899             io_thread()->system_url_request_context_getter());
 900     // Creating the component updater does not do anything, components
 901     // need to be registered and Start() needs to be called.
 902     component_updater_.reset(component_updater::ComponentUpdateServiceFactory(
 903                                  configurator).release());
 904   }
 905   return component_updater_.get();
 906 }
 907
 908 CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 909   if (!crl_set_fetcher_)
 910     crl_set_fetcher_ = new CRLSetFetcher();
 911   return crl_set_fetcher_.get();
 912 }
 913
 914 component_updater::PnaclComponentInstaller*
 915 BrowserProcessImpl::pnacl_component_installer() {
 916 #if !defined(DISABLE_NACL)
 917   if (!pnacl_component_installer_) {
 918     pnacl_component_installer_ =
 919         new component_updater::PnaclComponentInstaller();
 920   }
 921   return pnacl_component_installer_.get();
 922 #else
 923   return nullptr;
 924 #endif
 925 }
 926
 927 component_updater::SupervisedUserWhitelistInstaller*
 928 BrowserProcessImpl::supervised_user_whitelist_installer() {
 929   if (!supervised_user_whitelist_installer_) {
 930     supervised_user_whitelist_installer_ =
 931         component_updater::SupervisedUserWhitelistInstaller::Create(
 932             component_updater(), &profile_manager()->GetProfileInfoCache(),
 933             local_state());
 934   }
 935   return supervised_user_whitelist_installer_.get();
 936 }
 937
 938 void BrowserProcessImpl::ResourceDispatcherHostCreated() {
 939   resource_dispatcher_host_delegate_.reset(
 940       new ChromeResourceDispatcherHostDelegate);
 941   ResourceDispatcherHost::Get()->SetDelegate(
 942       resource_dispatcher_host_delegate_.get());
 943
 944   pref_change_registrar_.Add(
 945       prefs::kAllowCrossOriginAuthPrompt,
 946       base::Bind(&BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy,
 947                  base::Unretained(this)));
 948   ApplyAllowCrossOriginAuthPromptPolicy();
 949 }
 950
 951 void BrowserProcessImpl::CreateWatchdogThread() {
 952   DCHECK(!created_watchdog_thread_ && watchdog_thread_.get() == NULL);
 953   created_watchdog_thread_ = true;
 954
 955   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
 956   base::Thread::Options options;
 957   options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 958   if (!thread->StartWithOptions(options))
 959     return;
 960   watchdog_thread_.swap(thread);
 961 }
 962
 963 void BrowserProcessImpl::CreateProfileManager() {
 964   DCHECK(!created_profile_manager_ && profile_manager_.get() == NULL);
 965   created_profile_manager_ = true;
 966
 967   base::FilePath user_data_dir;
 968   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 969   profile_manager_.reset(new ProfileManager(user_data_dir));
 970 }
 971
 972 void BrowserProcessImpl::CreateLocalState() {
 973   DCHECK(!created_local_state_ && local_state_.get() == NULL);
 974   created_local_state_ = true;
 975
 976   base::FilePath local_state_path;
 977   CHECK(PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path));
 978   scoped_refptr<PrefRegistrySimple> pref_registry = new PrefRegistrySimple;
 979
 980   // Register local state preferences.
 981   chrome::RegisterLocalState(pref_registry.get());
 982
 983   local_state_ =
 984       chrome_prefs::CreateLocalState(local_state_path,
 985                                      local_state_task_runner_.get(),
 986                                      policy_service(),
 987                                      pref_registry,
 988                                      false).Pass();
 989
 990   pref_change_registrar_.Init(local_state_.get());
 991
 992   // Initialize the notification for the default browser setting policy.
 993   pref_change_registrar_.Add(
 994       prefs::kDefaultBrowserSettingEnabled,
 995       base::Bind(&BrowserProcessImpl::ApplyDefaultBrowserPolicy,
 996                  base::Unretained(this)));
 997
 998   // This preference must be kept in sync with external values; update them
 999   // whenever the preference or its controlling policy changes.
1000 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1001   pref_change_registrar_.Add(
1002       prefs::kMetricsReportingEnabled,
1003       base::Bind(&BrowserProcessImpl::ApplyMetricsReportingPolicy,
1004                  base::Unretained(this)));
1005 #endif
1006
1007   int max_per_proxy = local_state_->GetInteger(prefs::kMaxConnectionsPerProxy);
1008   net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
1009       net::HttpNetworkSession::NORMAL_SOCKET_POOL,
1010       std::max(std::min(max_per_proxy, 99),
1011                net::ClientSocketPoolManager::max_sockets_per_group(
1012                    net::HttpNetworkSession::NORMAL_SOCKET_POOL)));
1013 }
1014
1015 void BrowserProcessImpl::PreCreateThreads() {
1016   io_thread_.reset(
1017       new IOThread(local_state(), policy_service(), net_log_.get(),
1018                    extension_event_router_forwarder()));
1019 }
1020
1021 void BrowserProcessImpl::PreMainMessageLoopRun() {
1022   TRACE_EVENT0("startup", "BrowserProcessImpl::PreMainMessageLoopRun");
1023   SCOPED_UMA_HISTOGRAM_TIMER(
1024       "Startup.BrowserProcessImpl_PreMainMessageLoopRunTime");
1025
1026 #if defined(ENABLE_CONFIGURATION_POLICY)
1027   // browser_policy_connector() is created very early because local_state()
1028   // needs policy to be initialized with the managed preference values.
1029   // However, policy fetches from the network and loading of disk caches
1030   // requires that threads are running; this Init() call lets the connector
1031   // resume its initialization now that the loops are spinning and the
1032   // system request context is available for the fetchers.
1033   browser_policy_connector()->Init(local_state(), system_request_context());
1034 #endif
1035
1036   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled))
1037     ApplyDefaultBrowserPolicy();
1038
1039 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1040   ApplyMetricsReportingPolicy();
1041 #endif
1042
1043 #if defined(ENABLE_PLUGINS)
1044   PluginService* plugin_service = PluginService::GetInstance();
1045   plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
1046   plugin_service->StartWatchingPlugins();
1047
1048 #if defined(OS_POSIX)
1049   // Also find plugins in a user-specific plugins dir,
1050   // e.g. ~/.config/chromium/Plugins.
1051   const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess();
1052   if (!cmd_line.HasSwitch(switches::kDisablePluginsDiscovery)) {
1053     base::FilePath user_data_dir;
1054     if (PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
1055       plugin_service->AddExtraPluginDir(user_data_dir.Append("Plugins"));
1056   }
1057 #endif
1058
1059   // Triggers initialization of the singleton instance on UI thread.
1060   PluginFinder::GetInstance()->Init();
1061
1062 #if defined(ENABLE_PLUGIN_INSTALLATION)
1063   DCHECK(!plugins_resource_service_.get());
1064   plugins_resource_service_.reset(new PluginsResourceService(local_state()));
1065   plugins_resource_service_->Init();
1066 #endif
1067 #endif  // defined(ENABLE_PLUGINS)
1068
1069   const base::CommandLine& command_line =
1070       *base::CommandLine::ForCurrentProcess();
1071   if (!command_line.HasSwitch(switches::kDisableWebResources)) {
1072     DCHECK(!promo_resource_service_.get());
1073     promo_resource_service_.reset(new web_resource::PromoResourceService(
1074         local_state(), chrome::GetChannel(), GetApplicationLocale(),
1075         system_request_context(), switches::kDisableBackgroundNetworking,
1076         base::Bind(safe_json::SafeJsonParser::Parse)));
1077     promo_resource_service_->StartAfterDelay();
1078   }
1079
1080 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1081   storage_monitor::StorageMonitor::Create();
1082 #endif
1083
1084   child_process_watcher_.reset(new ChromeChildProcessWatcher());
1085
1086   CacheDefaultWebClientState();
1087
1088   platform_part_->PreMainMessageLoopRun();
1089 }
1090
1091 void BrowserProcessImpl::CreateIconManager() {
1092   DCHECK(!created_icon_manager_ && icon_manager_.get() == NULL);
1093   created_icon_manager_ = true;
1094   icon_manager_.reset(new IconManager);
1095 }
1096
1097 void BrowserProcessImpl::CreateIntranetRedirectDetector() {
1098   DCHECK(intranet_redirect_detector_.get() == NULL);
1099   scoped_ptr<IntranetRedirectDetector> intranet_redirect_detector(
1100       new IntranetRedirectDetector);
1101   intranet_redirect_detector_.swap(intranet_redirect_detector);
1102 }
1103
1104 void BrowserProcessImpl::CreateNotificationUIManager() {
1105 #if defined(ENABLE_NOTIFICATIONS)
1106   DCHECK(notification_ui_manager_.get() == NULL);
1107   notification_ui_manager_.reset(NotificationUIManager::Create(local_state()));
1108   created_notification_ui_manager_ = true;
1109 #endif
1110 }
1111
1112 void BrowserProcessImpl::CreateBackgroundModeManager() {
1113 #if defined(ENABLE_BACKGROUND)
1114   DCHECK(background_mode_manager_.get() == NULL);
1115   background_mode_manager_.reset(
1116       new BackgroundModeManager(*base::CommandLine::ForCurrentProcess(),
1117                                 &profile_manager()->GetProfileInfoCache()));
1118 #endif
1119 }
1120
1121 void BrowserProcessImpl::CreateStatusTray() {
1122   DCHECK(status_tray_.get() == NULL);
1123   status_tray_.reset(StatusTray::Create());
1124 }
1125
1126 void BrowserProcessImpl::CreatePrintPreviewDialogController() {
1127 #if defined(ENABLE_PRINT_PREVIEW)
1128   DCHECK(print_preview_dialog_controller_.get() == NULL);
1129   print_preview_dialog_controller_ =
1130       new printing::PrintPreviewDialogController();
1131 #else
1132   NOTIMPLEMENTED();
1133 #endif
1134 }
1135
1136 void BrowserProcessImpl::CreateBackgroundPrintingManager() {
1137 #if defined(ENABLE_PRINT_PREVIEW)
1138   DCHECK(background_printing_manager_.get() == NULL);
1139   background_printing_manager_.reset(new printing::BackgroundPrintingManager());
1140 #else
1141   NOTIMPLEMENTED();
1142 #endif
1143 }
1144
1145 void BrowserProcessImpl::CreateSafeBrowsingService() {
1146   DCHECK(safe_browsing_service_.get() == NULL);
1147   // Set this flag to true so that we don't retry indefinitely to
1148   // create the service class if there was an error.
1149   created_safe_browsing_service_ = true;
1150 #if defined(SAFE_BROWSING_SERVICE)
1151   safe_browsing_service_ = SafeBrowsingService::CreateSafeBrowsingService();
1152   safe_browsing_service_->Initialize();
1153 #endif
1154 }
1155
1156 void BrowserProcessImpl::CreateGCMDriver() {
1157   DCHECK(!gcm_driver_);
1158
1159 #if defined(OS_ANDROID)
1160   // Android's GCMDriver currently makes the assumption that it's a singleton.
1161   // Until this gets fixed, instantiating multiple Java GCMDrivers will throw
1162   // an exception, but because they're only initialized on demand these crashes
1163   // would be very difficult to triage. See http://crbug.com/437827.
1164   NOTREACHED();
1165 #else
1166   base::FilePath store_path;
1167   CHECK(PathService::Get(chrome::DIR_GLOBAL_GCM_STORE, &store_path));
1168   gcm_driver_ = gcm::CreateGCMDriverDesktop(
1169       make_scoped_ptr(new gcm::GCMClientFactory),
1170       local_state(),
1171       store_path,
1172       system_request_context());
1173 #endif  // defined(OS_ANDROID)
1174 }
1175
1176 void BrowserProcessImpl::ApplyDefaultBrowserPolicy() {
1177   if (local_state()->GetBoolean(prefs::kDefaultBrowserSettingEnabled)) {
1178     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
1179         set_browser_worker = new ShellIntegration::DefaultBrowserWorker(NULL);
1180     set_browser_worker->StartSetAsDefault();
1181   }
1182 }
1183
1184 void BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy() {
1185   bool value = local_state()->GetBoolean(prefs::kAllowCrossOriginAuthPrompt);
1186   ResourceDispatcherHost::Get()->SetAllowCrossOriginAuthPrompt(value);
1187 }
1188
1189 void BrowserProcessImpl::ApplyMetricsReportingPolicy() {
1190 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1191   CHECK(BrowserThread::PostTask(
1192       BrowserThread::FILE, FROM_HERE,
1193       base::Bind(
1194           base::IgnoreResult(&GoogleUpdateSettings::SetCollectStatsConsent),
1195           local_state()->GetBoolean(prefs::kMetricsReportingEnabled))));
1196 #endif
1197 }
1198
1199 void BrowserProcessImpl::CacheDefaultWebClientState() {
1200 #if defined(OS_CHROMEOS)
1201   cached_default_web_client_state_ = ShellIntegration::IS_DEFAULT;
1202 #elif !defined(OS_ANDROID) && !defined(OS_IOS)
1203   cached_default_web_client_state_ = ShellIntegration::GetDefaultBrowser();
1204 #endif
1205 }
1206
1207 // Mac is currently not supported.
1208 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
1209
1210 bool BrowserProcessImpl::CanAutorestartForUpdate() const {
1211   // Check if browser is in the background and if it needs to be restarted to
1212   // apply a pending update.
1213   return chrome::GetTotalBrowserCount() == 0 && chrome::WillKeepAlive() &&
1214          upgrade_util::IsUpdatePendingRestart();
1215 }
1216
1217 // Switches to add when auto-restarting Chrome.
1218 const char* const kSwitchesToAddOnAutorestart[] = {
1219   switches::kNoStartupWindow
1220 };
1221
1222 void BrowserProcessImpl::RestartBackgroundInstance() {
1223   base::CommandLine* old_cl = base::CommandLine::ForCurrentProcess();
1224   scoped_ptr<base::CommandLine> new_cl(
1225       new base::CommandLine(old_cl->GetProgram()));
1226
1227   std::map<std::string, base::CommandLine::StringType> switches =
1228       old_cl->GetSwitches();
1229
1230   switches::RemoveSwitchesForAutostart(&switches);
1231
1232   // Append the rest of the switches (along with their values, if any)
1233   // to the new command line
1234   for (std::map<std::string, base::CommandLine::StringType>::const_iterator i =
1235            switches.begin();
1236        i != switches.end(); ++i) {
1237     base::CommandLine::StringType switch_value = i->second;
1238       if (switch_value.length() > 0) {
1239         new_cl->AppendSwitchNative(i->first, i->second);
1240       } else {
1241         new_cl->AppendSwitch(i->first);
1242       }
1243   }
1244
1245   // Ensure that our desired switches are set on the new process.
1246   for (size_t i = 0; i < arraysize(kSwitchesToAddOnAutorestart); ++i) {
1247     if (!new_cl->HasSwitch(kSwitchesToAddOnAutorestart[i]))
1248       new_cl->AppendSwitch(kSwitchesToAddOnAutorestart[i]);
1249   }
1250
1251   DLOG(WARNING) << "Shutting down current instance of the browser.";
1252   chrome::AttemptExit();
1253
1254   // Transfer ownership to Upgrade.
1255   upgrade_util::SetNewCommandLine(new_cl.release());
1256 }
1257
1258 void BrowserProcessImpl::OnAutoupdateTimer() {
1259   if (CanAutorestartForUpdate()) {
1260     DLOG(WARNING) << "Detected update.  Restarting browser.";
1261     RestartBackgroundInstance();
1262   }
1263 }
1264
1265 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)