chrome/browser/sync/profile_sync_components_factory_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/sync/profile_sync_components_factory_impl.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "build/build_config.h"
  10 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/sync/glue/autofill_data_type_controller.h"
  13 #include "chrome/browser/sync/glue/autofill_profile_data_type_controller.h"
  14 #include "chrome/browser/sync/glue/autofill_wallet_data_type_controller.h"
  15 #include "chrome/browser/sync/glue/bookmark_change_processor.h"
  16 #include "chrome/browser/sync/glue/bookmark_data_type_controller.h"
  17 #include "chrome/browser/sync/glue/bookmark_model_associator.h"
  18 #include "chrome/browser/sync/glue/chrome_report_unrecoverable_error.h"
  19 #include "chrome/browser/sync/glue/history_delete_directives_data_type_controller.h"
  20 #include "chrome/browser/sync/glue/local_device_info_provider_impl.h"
  21 #include "chrome/browser/sync/glue/password_data_type_controller.h"
  22 #include "chrome/browser/sync/glue/search_engine_data_type_controller.h"
  23 #include "chrome/browser/sync/glue/sync_backend_host.h"
  24 #include "chrome/browser/sync/glue/sync_backend_host_impl.h"
  25 #include "chrome/browser/sync/glue/theme_data_type_controller.h"
  26 #include "chrome/browser/sync/glue/typed_url_change_processor.h"
  27 #include "chrome/browser/sync/glue/typed_url_data_type_controller.h"
  28 #include "chrome/browser/sync/profile_sync_service.h"
  29 #include "chrome/browser/sync/sessions/session_data_type_controller.h"
  30 #include "chrome/common/chrome_switches.h"
  31 #include "chrome/common/pref_names.h"
  32 #include "components/autofill/core/common/autofill_pref_names.h"
  33 #include "components/autofill/core/common/autofill_switches.h"
  34 #include "components/dom_distiller/core/dom_distiller_features.h"
  35 #include "components/sync_driver/data_type_manager_impl.h"
  36 #include "components/sync_driver/device_info_data_type_controller.h"
  37 #include "components/sync_driver/glue/typed_url_model_associator.h"
  38 #include "components/sync_driver/proxy_data_type_controller.h"
  39 #include "components/sync_driver/ui_data_type_controller.h"
  40 #include "content/public/browser/browser_thread.h"
  41 #include "google_apis/gaia/oauth2_token_service.h"
  42 #include "google_apis/gaia/oauth2_token_service_request.h"
  43 #include "net/url_request/url_request_context_getter.h"
  44 #include "sync/internal_api/public/attachments/attachment_downloader.h"
  45 #include "sync/internal_api/public/attachments/attachment_service.h"
  46 #include "sync/internal_api/public/attachments/attachment_service_impl.h"
  47 #include "sync/internal_api/public/attachments/attachment_uploader_impl.h"
  48
  49 #if defined(ENABLE_APP_LIST)
  50 #include "ui/app_list/app_list_switches.h"
  51 #endif
  52
  53 #if defined(ENABLE_EXTENSIONS)
  54 #include "chrome/browser/sync/glue/extension_data_type_controller.h"
  55 #include "chrome/browser/sync/glue/extension_setting_data_type_controller.h"
  56 #endif
  57
  58 #if defined(ENABLE_SUPERVISED_USERS)
  59 #include "chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h"
  60 #endif
  61
  62 using bookmarks::BookmarkModel;
  63 using browser_sync::AutofillDataTypeController;
  64 using browser_sync::AutofillProfileDataTypeController;
  65 using browser_sync::BookmarkChangeProcessor;
  66 using browser_sync::BookmarkDataTypeController;
  67 using browser_sync::BookmarkModelAssociator;
  68 using browser_sync::ChromeReportUnrecoverableError;
  69 #if defined(ENABLE_EXTENSIONS)
  70 using browser_sync::ExtensionDataTypeController;
  71 using browser_sync::ExtensionSettingDataTypeController;
  72 #endif
  73 using browser_sync::HistoryDeleteDirectivesDataTypeController;
  74 using browser_sync::PasswordDataTypeController;
  75 using browser_sync::SearchEngineDataTypeController;
  76 using browser_sync::SessionDataTypeController;
  77 using browser_sync::SyncBackendHost;
  78 using browser_sync::ThemeDataTypeController;
  79 using browser_sync::TypedUrlChangeProcessor;
  80 using browser_sync::TypedUrlDataTypeController;
  81 using browser_sync::TypedUrlModelAssociator;
  82 using content::BrowserThread;
  83 using sync_driver::DataTypeController;
  84 using sync_driver::DataTypeErrorHandler;
  85 using sync_driver::DataTypeManager;
  86 using sync_driver::DataTypeManagerImpl;
  87 using sync_driver::DataTypeManagerObserver;
  88 using sync_driver::DeviceInfoDataTypeController;
  89 using sync_driver::ProxyDataTypeController;
  90 using sync_driver::UIDataTypeController;
  91
  92 namespace {
  93
  94 syncer::ModelTypeSet GetDisabledTypesFromCommandLine(
  95     const base::CommandLine& command_line) {
  96   syncer::ModelTypeSet disabled_types;
  97   std::string disabled_types_str =
  98       command_line.GetSwitchValueASCII(switches::kDisableSyncTypes);
  99
 100   // Disable sync types experimentally to measure impact on startup time.
 101   // TODO(mlerman): Remove this after the experiment. crbug.com/454788
 102   std::string disable_types_finch =
 103       variations::GetVariationParamValue("LightSpeed", "DisableSyncPart");
 104   if (!disable_types_finch.empty()) {
 105     if (disabled_types_str.empty())
 106       disabled_types_str = disable_types_finch;
 107     else
 108       disabled_types_str += ", " + disable_types_finch;
 109   }
 110
 111   disabled_types = syncer::ModelTypeSetFromString(disabled_types_str);
 112   return disabled_types;
 113 }
 114
 115 syncer::ModelTypeSet GetEnabledTypesFromCommandLine(
 116     const base::CommandLine& command_line) {
 117   syncer::ModelTypeSet enabled_types;
 118   if (command_line.HasSwitch(autofill::switches::kEnableWalletMetadataSync))
 119     enabled_types.Put(syncer::AUTOFILL_WALLET_METADATA);
 120
 121   return enabled_types;
 122 }
 123
 124 }  // namespace
 125
 126 ProfileSyncComponentsFactoryImpl::ProfileSyncComponentsFactoryImpl(
 127     Profile* profile,
 128     base::CommandLine* command_line,
 129     const GURL& sync_service_url,
 130     OAuth2TokenService* token_service,
 131     net::URLRequestContextGetter* url_request_context_getter)
 132     : profile_(profile),
 133       command_line_(command_line),
 134       sync_service_url_(sync_service_url),
 135       token_service_(token_service),
 136       url_request_context_getter_(url_request_context_getter),
 137       chrome_sync_client_(profile_, this),
 138       weak_factory_(this) {
 139   DCHECK(token_service_);
 140   DCHECK(url_request_context_getter_);
 141 }
 142
 143 ProfileSyncComponentsFactoryImpl::~ProfileSyncComponentsFactoryImpl() {
 144 }
 145
 146 void ProfileSyncComponentsFactoryImpl::Initialize(
 147     sync_driver::SyncService* sync_service) {
 148   chrome_sync_client_.Initialize(sync_service);
 149 }
 150
 151 void ProfileSyncComponentsFactoryImpl::RegisterDataTypes() {
 152   syncer::ModelTypeSet disabled_types =
 153       GetDisabledTypesFromCommandLine(*command_line_);
 154   syncer::ModelTypeSet enabled_types =
 155       GetEnabledTypesFromCommandLine(*command_line_);
 156   RegisterCommonDataTypes(disabled_types, enabled_types);
 157 #if !defined(OS_ANDROID)
 158   RegisterDesktopDataTypes(disabled_types, enabled_types);
 159 #endif
 160 }
 161
 162 void ProfileSyncComponentsFactoryImpl::RegisterCommonDataTypes(
 163     syncer::ModelTypeSet disabled_types,
 164     syncer::ModelTypeSet enabled_types) {
 165   sync_driver::SyncService* sync_service = chrome_sync_client_.GetSyncService();
 166
 167   // TODO(stanisc): can DEVICE_INFO be one of disabled datatypes?
 168   sync_service->RegisterDataTypeController(new DeviceInfoDataTypeController(
 169       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 170       base::Bind(&ChromeReportUnrecoverableError),
 171       &chrome_sync_client_,
 172       sync_service->GetLocalDeviceInfoProvider()));
 173
 174   // Autofill sync is enabled by default.  Register unless explicitly
 175   // disabled.
 176   if (!disabled_types.Has(syncer::AUTOFILL)) {
 177     sync_service->RegisterDataTypeController(
 178         new AutofillDataTypeController(&chrome_sync_client_));
 179   }
 180
 181   // Autofill profile sync is enabled by default.  Register unless explicitly
 182   // disabled.
 183   if (!disabled_types.Has(syncer::AUTOFILL_PROFILE)) {
 184     sync_service->RegisterDataTypeController(
 185         new AutofillProfileDataTypeController(&chrome_sync_client_));
 186   }
 187
 188   // Wallet data sync is enabled by default, but behind a syncer experiment
 189   // enforced by the datatype controller. Register unless explicitly disabled.
 190   bool wallet_disabled = disabled_types.Has(syncer::AUTOFILL_WALLET_DATA);
 191   if (!wallet_disabled) {
 192     sync_service->RegisterDataTypeController(
 193         new browser_sync::AutofillWalletDataTypeController(
 194             &chrome_sync_client_, syncer::AUTOFILL_WALLET_DATA));
 195   }
 196
 197   // Wallet metadata sync depends on Wallet data sync and is disabled by
 198   // default. Register if Wallet data is syncing and metadata sync is explicitly
 199   // enabled.
 200   if (!wallet_disabled && enabled_types.Has(syncer::AUTOFILL_WALLET_METADATA)) {
 201     sync_service->RegisterDataTypeController(
 202         new browser_sync::AutofillWalletDataTypeController(
 203             &chrome_sync_client_, syncer::AUTOFILL_WALLET_METADATA));
 204   }
 205
 206   // Bookmark sync is enabled by default.  Register unless explicitly
 207   // disabled.
 208   if (!disabled_types.Has(syncer::BOOKMARKS)) {
 209     sync_service->RegisterDataTypeController(
 210         new BookmarkDataTypeController(&chrome_sync_client_));
 211   }
 212
 213   const bool history_disabled =
 214       profile_->GetPrefs()->GetBoolean(prefs::kSavingBrowserHistoryDisabled);
 215   // TypedUrl sync is enabled by default.  Register unless explicitly disabled,
 216   // or if saving history is disabled.
 217   if (!disabled_types.Has(syncer::TYPED_URLS) && !history_disabled) {
 218     sync_service->RegisterDataTypeController(
 219         new TypedUrlDataTypeController(&chrome_sync_client_));
 220   }
 221
 222   // Delete directive sync is enabled by default.  Register unless full history
 223   // sync is disabled.
 224   if (!disabled_types.Has(syncer::HISTORY_DELETE_DIRECTIVES) &&
 225       !history_disabled) {
 226     sync_service->RegisterDataTypeController(
 227         new HistoryDeleteDirectivesDataTypeController(&chrome_sync_client_));
 228   }
 229
 230   // Session sync is enabled by default.  Register unless explicitly disabled.
 231   // This is also disabled if the browser history is disabled, because the
 232   // tab sync data is added to the web history on the server.
 233   if (!disabled_types.Has(syncer::PROXY_TABS) && !history_disabled) {
 234     sync_service->RegisterDataTypeController(new ProxyDataTypeController(
 235         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 236         syncer::PROXY_TABS));
 237     // TODO(zea): remove this once SyncedWindowDelegateGetter is componentized.
 238     // For now, we know that the implementation of SyncService is always a
 239     // ProfileSyncService at this level.
 240     ProfileSyncService* pss = static_cast<ProfileSyncService*>(sync_service);
 241     sync_service->RegisterDataTypeController(new SessionDataTypeController(
 242         &chrome_sync_client_, profile_, pss->GetSyncedWindowDelegatesGetter(),
 243         sync_service->GetLocalDeviceInfoProvider()));
 244   }
 245
 246   // Favicon sync is enabled by default. Register unless explicitly disabled.
 247   if (!disabled_types.Has(syncer::FAVICON_IMAGES) &&
 248       !disabled_types.Has(syncer::FAVICON_TRACKING) &&
 249       !history_disabled) {
 250     // crbug/384552. We disable error uploading for this data types for now.
 251     sync_service->RegisterDataTypeController(
 252         new UIDataTypeController(
 253             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 254             base::Closure(),
 255             syncer::FAVICON_IMAGES,
 256             &chrome_sync_client_));
 257     sync_service->RegisterDataTypeController(
 258         new UIDataTypeController(
 259             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 260             base::Closure(),
 261             syncer::FAVICON_TRACKING,
 262             &chrome_sync_client_));
 263   }
 264
 265   // Password sync is enabled by default.  Register unless explicitly
 266   // disabled.
 267   if (!disabled_types.Has(syncer::PASSWORDS)) {
 268     sync_service->RegisterDataTypeController(
 269         new PasswordDataTypeController(&chrome_sync_client_, profile_));
 270   }
 271
 272   if (!disabled_types.Has(syncer::PRIORITY_PREFERENCES)) {
 273     sync_service->RegisterDataTypeController(
 274         new UIDataTypeController(
 275             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 276             base::Bind(&ChromeReportUnrecoverableError),
 277             syncer::PRIORITY_PREFERENCES,
 278             &chrome_sync_client_));
 279   }
 280
 281   // Article sync is disabled by default.  Register only if explicitly enabled.
 282   if (dom_distiller::IsEnableSyncArticlesSet()) {
 283     sync_service->RegisterDataTypeController(
 284         new UIDataTypeController(
 285             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 286             base::Bind(&ChromeReportUnrecoverableError),
 287             syncer::ARTICLES,
 288             &chrome_sync_client_));
 289   }
 290
 291 #if defined(ENABLE_SUPERVISED_USERS)
 292   sync_service->RegisterDataTypeController(
 293       new SupervisedUserSyncDataTypeController(
 294           syncer::SUPERVISED_USER_SETTINGS,
 295           &chrome_sync_client_,
 296           profile_));
 297   sync_service->RegisterDataTypeController(
 298       new SupervisedUserSyncDataTypeController(
 299           syncer::SUPERVISED_USER_WHITELISTS,
 300           &chrome_sync_client_,
 301           profile_));
 302 #endif
 303 }
 304
 305 void ProfileSyncComponentsFactoryImpl::RegisterDesktopDataTypes(
 306     syncer::ModelTypeSet disabled_types,
 307     syncer::ModelTypeSet enabled_types) {
 308   sync_driver::SyncService* sync_service = chrome_sync_client_.GetSyncService();
 309
 310 #if defined(ENABLE_EXTENSIONS)
 311   // App sync is enabled by default.  Register unless explicitly
 312   // disabled.
 313   if (!disabled_types.Has(syncer::APPS)) {
 314     sync_service->RegisterDataTypeController(new ExtensionDataTypeController(
 315         syncer::APPS, &chrome_sync_client_, profile_));
 316   }
 317
 318   // Extension sync is enabled by default.  Register unless explicitly
 319   // disabled.
 320   if (!disabled_types.Has(syncer::EXTENSIONS)) {
 321     sync_service->RegisterDataTypeController(new ExtensionDataTypeController(
 322         syncer::EXTENSIONS, &chrome_sync_client_, profile_));
 323   }
 324 #endif
 325
 326   // Preference sync is enabled by default.  Register unless explicitly
 327   // disabled.
 328   if (!disabled_types.Has(syncer::PREFERENCES)) {
 329     sync_service->RegisterDataTypeController(
 330         new UIDataTypeController(
 331             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 332             base::Bind(&ChromeReportUnrecoverableError),
 333             syncer::PREFERENCES,
 334             &chrome_sync_client_));
 335   }
 336
 337 #if defined(ENABLE_THEMES)
 338   // Theme sync is enabled by default.  Register unless explicitly disabled.
 339   if (!disabled_types.Has(syncer::THEMES)) {
 340     sync_service->RegisterDataTypeController(
 341         new ThemeDataTypeController(&chrome_sync_client_, profile_));
 342   }
 343 #endif
 344
 345   // Search Engine sync is enabled by default.  Register unless explicitly
 346   // disabled.
 347   if (!disabled_types.Has(syncer::SEARCH_ENGINES)) {
 348     sync_service->RegisterDataTypeController(
 349         new SearchEngineDataTypeController(&chrome_sync_client_, profile_));
 350   }
 351
 352 #if defined(ENABLE_EXTENSIONS)
 353   // Extension setting sync is enabled by default.  Register unless explicitly
 354   // disabled.
 355   if (!disabled_types.Has(syncer::EXTENSION_SETTINGS)) {
 356     sync_service->RegisterDataTypeController(
 357         new ExtensionSettingDataTypeController(syncer::EXTENSION_SETTINGS,
 358                                                &chrome_sync_client_, profile_));
 359   }
 360
 361   // App setting sync is enabled by default.  Register unless explicitly
 362   // disabled.
 363   if (!disabled_types.Has(syncer::APP_SETTINGS)) {
 364     sync_service->RegisterDataTypeController(
 365         new ExtensionSettingDataTypeController(syncer::APP_SETTINGS,
 366                                                &chrome_sync_client_, profile_));
 367   }
 368 #endif
 369
 370 #if defined(ENABLE_APP_LIST)
 371   if (app_list::switches::IsAppListSyncEnabled()) {
 372     sync_service->RegisterDataTypeController(
 373         new UIDataTypeController(
 374             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 375             base::Bind(&ChromeReportUnrecoverableError),
 376             syncer::APP_LIST,
 377             &chrome_sync_client_));
 378   }
 379 #endif
 380
 381 #if defined(OS_LINUX) || defined(OS_WIN) || defined(OS_CHROMEOS)
 382   // Dictionary sync is enabled by default.
 383   if (!disabled_types.Has(syncer::DICTIONARY)) {
 384     sync_service->RegisterDataTypeController(
 385         new UIDataTypeController(
 386             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 387             base::Bind(&ChromeReportUnrecoverableError),
 388             syncer::DICTIONARY,
 389             &chrome_sync_client_));
 390   }
 391 #endif
 392
 393 #if defined(ENABLE_SUPERVISED_USERS)
 394   sync_service->RegisterDataTypeController(
 395       new SupervisedUserSyncDataTypeController(
 396           syncer::SUPERVISED_USERS,
 397           &chrome_sync_client_,
 398           profile_));
 399   sync_service->RegisterDataTypeController(
 400       new SupervisedUserSyncDataTypeController(
 401           syncer::SUPERVISED_USER_SHARED_SETTINGS,
 402           &chrome_sync_client_,
 403           profile_));
 404 #endif
 405
 406 #if defined(OS_CHROMEOS)
 407   if (command_line_->HasSwitch(switches::kEnableWifiCredentialSync) &&
 408       !disabled_types.Has(syncer::WIFI_CREDENTIALS)) {
 409     sync_service->RegisterDataTypeController(
 410         new UIDataTypeController(
 411             BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
 412             base::Bind(&ChromeReportUnrecoverableError),
 413             syncer::WIFI_CREDENTIALS,
 414             &chrome_sync_client_));
 415   }
 416 #endif
 417 }
 418
 419 DataTypeManager* ProfileSyncComponentsFactoryImpl::CreateDataTypeManager(
 420     const syncer::WeakHandle<syncer::DataTypeDebugInfoListener>&
 421         debug_info_listener,
 422     const DataTypeController::TypeMap* controllers,
 423     const sync_driver::DataTypeEncryptionHandler* encryption_handler,
 424     SyncBackendHost* backend,
 425     DataTypeManagerObserver* observer) {
 426   return new DataTypeManagerImpl(base::Bind(ChromeReportUnrecoverableError),
 427                                  debug_info_listener,
 428                                  controllers,
 429                                  encryption_handler,
 430                                  backend,
 431                                  observer);
 432 }
 433
 434 browser_sync::SyncBackendHost*
 435 ProfileSyncComponentsFactoryImpl::CreateSyncBackendHost(
 436     const std::string& name,
 437     invalidation::InvalidationService* invalidator,
 438     const base::WeakPtr<sync_driver::SyncPrefs>& sync_prefs,
 439     const base::FilePath& sync_folder) {
 440   return new browser_sync::SyncBackendHostImpl(name, profile_, invalidator,
 441                                                sync_prefs, sync_folder);
 442 }
 443
 444 scoped_ptr<sync_driver::LocalDeviceInfoProvider>
 445 ProfileSyncComponentsFactoryImpl::CreateLocalDeviceInfoProvider() {
 446   return scoped_ptr<sync_driver::LocalDeviceInfoProvider>(
 447       new browser_sync::LocalDeviceInfoProviderImpl());
 448 }
 449
 450 class TokenServiceProvider
 451     : public OAuth2TokenServiceRequest::TokenServiceProvider {
 452  public:
 453   TokenServiceProvider(
 454       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
 455       OAuth2TokenService* token_service);
 456
 457   // OAuth2TokenServiceRequest::TokenServiceProvider implementation.
 458   scoped_refptr<base::SingleThreadTaskRunner> GetTokenServiceTaskRunner()
 459       override;
 460   OAuth2TokenService* GetTokenService() override;
 461
 462  private:
 463   ~TokenServiceProvider() override;
 464
 465   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 466   OAuth2TokenService* token_service_;
 467 };
 468
 469 TokenServiceProvider::TokenServiceProvider(
 470     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
 471     OAuth2TokenService* token_service)
 472     : task_runner_(task_runner), token_service_(token_service) {
 473 }
 474
 475 TokenServiceProvider::~TokenServiceProvider() {
 476 }
 477
 478 scoped_refptr<base::SingleThreadTaskRunner>
 479 TokenServiceProvider::GetTokenServiceTaskRunner() {
 480   return task_runner_;
 481 }
 482
 483 OAuth2TokenService* TokenServiceProvider::GetTokenService() {
 484   return token_service_;
 485 }
 486
 487 scoped_ptr<syncer::AttachmentService>
 488 ProfileSyncComponentsFactoryImpl::CreateAttachmentService(
 489     scoped_ptr<syncer::AttachmentStoreForSync> attachment_store,
 490     const syncer::UserShare& user_share,
 491     const std::string& store_birthday,
 492     syncer::ModelType model_type,
 493     syncer::AttachmentService::Delegate* delegate) {
 494   scoped_ptr<syncer::AttachmentUploader> attachment_uploader;
 495   scoped_ptr<syncer::AttachmentDownloader> attachment_downloader;
 496   // Only construct an AttachmentUploader and AttachmentDownload if we have sync
 497   // credentials. We may not have sync credentials because there may not be a
 498   // signed in sync user (e.g. sync is running in "backup" mode).
 499   if (!user_share.sync_credentials.email.empty() &&
 500       !user_share.sync_credentials.scope_set.empty()) {
 501     scoped_refptr<OAuth2TokenServiceRequest::TokenServiceProvider>
 502         token_service_provider(new TokenServiceProvider(
 503             content::BrowserThread::GetMessageLoopProxyForThread(
 504                 content::BrowserThread::UI),
 505             token_service_));
 506     // TODO(maniscalco): Use shared (one per profile) thread-safe instances of
 507     // AttachmentUploader and AttachmentDownloader instead of creating a new one
 508     // per AttachmentService (bug 369536).
 509     attachment_uploader.reset(new syncer::AttachmentUploaderImpl(
 510         sync_service_url_, url_request_context_getter_,
 511         user_share.sync_credentials.email,
 512         user_share.sync_credentials.scope_set, token_service_provider,
 513         store_birthday, model_type));
 514
 515     token_service_provider = new TokenServiceProvider(
 516         content::BrowserThread::GetMessageLoopProxyForThread(
 517             content::BrowserThread::UI),
 518         token_service_);
 519     attachment_downloader = syncer::AttachmentDownloader::Create(
 520         sync_service_url_, url_request_context_getter_,
 521         user_share.sync_credentials.email,
 522         user_share.sync_credentials.scope_set, token_service_provider,
 523         store_birthday, model_type);
 524   }
 525
 526   // It is important that the initial backoff delay is relatively large.  For
 527   // whatever reason, the server may fail all requests for a short period of
 528   // time.  When this happens we don't want to overwhelm the server with
 529   // requests so we use a large initial backoff.
 530   const base::TimeDelta initial_backoff_delay =
 531       base::TimeDelta::FromMinutes(30);
 532   const base::TimeDelta max_backoff_delay = base::TimeDelta::FromHours(4);
 533   scoped_ptr<syncer::AttachmentService> attachment_service(
 534       new syncer::AttachmentServiceImpl(
 535           attachment_store.Pass(), attachment_uploader.Pass(),
 536           attachment_downloader.Pass(), delegate, initial_backoff_delay,
 537           max_backoff_delay));
 538   return attachment_service.Pass();
 539 }
 540
 541 sync_driver::SyncApiComponentFactory::SyncComponents
 542     ProfileSyncComponentsFactoryImpl::CreateBookmarkSyncComponents(
 543         sync_driver::SyncService* sync_service,
 544         sync_driver::DataTypeErrorHandler* error_handler) {
 545   BookmarkModel* bookmark_model =
 546       BookmarkModelFactory::GetForProfile(profile_);
 547   syncer::UserShare* user_share = sync_service->GetUserShare();
 548   // TODO(akalin): We may want to propagate this switch up eventually.
 549 #if defined(OS_ANDROID)
 550   const bool kExpectMobileBookmarksFolder = true;
 551 #else
 552   const bool kExpectMobileBookmarksFolder = false;
 553 #endif
 554   BookmarkModelAssociator* model_associator =
 555       new BookmarkModelAssociator(bookmark_model,
 556                                   profile_,
 557                                   user_share,
 558                                   error_handler,
 559                                   kExpectMobileBookmarksFolder);
 560   BookmarkChangeProcessor* change_processor =
 561       new BookmarkChangeProcessor(profile_,
 562                                   model_associator,
 563                                   error_handler);
 564   return SyncComponents(model_associator, change_processor);
 565 }
 566
 567 sync_driver::SyncApiComponentFactory::SyncComponents
 568     ProfileSyncComponentsFactoryImpl::CreateTypedUrlSyncComponents(
 569         sync_driver::SyncService* sync_service,
 570         history::HistoryBackend* history_backend,
 571         sync_driver::DataTypeErrorHandler* error_handler) {
 572   // TODO(zea): Once TypedURLs are converted to SyncableService, remove
 573   // |sync_service_| member, and make GetSyncService require it be called on
 574   // the UI thread.
 575   TypedUrlModelAssociator* model_associator =
 576       new TypedUrlModelAssociator(sync_service,
 577                                   history_backend,
 578                                   error_handler);
 579   TypedUrlChangeProcessor* change_processor =
 580       new TypedUrlChangeProcessor(profile_,
 581                                   model_associator,
 582                                   history_backend,
 583                                   error_handler);
 584   return SyncComponents(model_associator, change_processor);
 585 }