Make ProfileSyncService a client of memory coordinator

components/browser_sync/profile_sync_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #define COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/location.h"
 #include "base/macros.h"
+#include "base/memory/memory_coordinator_client.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/signin/core/browser/gaia_cookie_manager_service.h"
@@ skipping 151 matching lines @@
 //   datatype configuration can begin.
 class ProfileSyncService : public sync_driver::SyncService,
                            public sync_driver::SyncFrontend,
                            public sync_driver::SyncPrefObserver,
                            public sync_driver::DataTypeManagerObserver,
                            public syncer::UnrecoverableErrorHandler,
                            public KeyedService,
                            public OAuth2TokenService::Consumer,
                            public OAuth2TokenService::Observer,
                            public SigninManagerBase::Observer,
-                           public GaiaCookieManagerService::Observer {
+                           public GaiaCookieManagerService::Observer,
+                           public base::MemoryCoordinatorClient {
  public:
   typedef SyncBackendHost::Status Status;
   typedef base::Callback<bool(void)> PlatformSyncAllowedProvider;
 
   enum SyncEventCodes {
     MIN_SYNC_EVENT_CODE = 0,
 
     // Events starting the sync service.
     START_FROM_NTP = 1,               // Sync was started from the ad in NTP
     START_FROM_WRENCH = 2,            // Sync was started from the Wrench menu.
@@ skipping 463 matching lines @@
     NOT_REQUESTED_NOT_SETUP,  // The user turned off sync and setup completed
                               // is false. Might indicate a stop-and-clear.
     NEEDS_CONFIRMATION,       // The user must confirm sync settings.
     IS_MANAGED,               // Sync is disallowed by enterprise policy.
     NOT_ALLOWED_BY_PLATFORM,  // Sync is disallowed by the platform.
     SYNC_INITIAL_STATE_LIMIT
   };
 
   friend class TestProfileSyncService;
 
+  // base::MemoryCoordinatorClient implementation:
+  void OnMemoryStateChange(base::MemoryState state) override;
+
+  void IncrementMemoryPressureWarningCount();
+
   // Stops the sync engine. Does NOT set IsSyncRequested to false. Use
   // RequestStop for that. |data_fate| controls whether the local sync data is
   // deleted or kept when the engine shuts down.
   void StopImpl(SyncStopDataFate data_fate);
 
   // Update the last auth error and notify observers of error state.
   void UpdateAuthErrorState(const GoogleServiceAuthError& error);
 
   // Puts the backend's sync scheduler into NORMAL mode.
   // Called when configuration is complete.
@@ skipping 332 matching lines @@
   base::WeakPtrFactory<ProfileSyncService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(const syncer::SyncProtocolError& error);
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_