[GCM] Stop/restart GCM when the state is forced off/on

google_apis/gcm/engine/gcm_store_impl.h

 // Copyright 2014 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 GOOGLE_APIS_GCM_ENGINE_GCM_STORE_IMPL_H_
 #define GOOGLE_APIS_GCM_ENGINE_GCM_STORE_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 13 matching lines @@
 class GCM_EXPORT GCMStoreImpl : public GCMStore {
  public:
   GCMStoreImpl(bool use_mock_keychain,
                const base::FilePath& path,
                scoped_refptr<base::SequencedTaskRunner> blocking_task_runner);
   virtual ~GCMStoreImpl();
 
   // Load the directory and pass the initial state back to caller.
   virtual void Load(const LoadCallback& callback) OVERRIDE;
 
+  // Closes the GCM store.
+  virtual void Close() OVERRIDE;
+
   // Clears the GCM store of all data and destroys any LevelDB files associated
   // with this store.
   // WARNING: this will permanently destroy any pending outgoing messages
   // and require the device to re-create credentials and serial number mapping
   // tables.
   virtual void Destroy(const UpdateCallback& callback) OVERRIDE;
 
   // Sets this device's messaging credentials.
   virtual void SetDeviceCredentials(uint64 device_android_id,
                                     uint64 device_security_token,
@@ skipping 60 matching lines @@
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   base::WeakPtrFactory<GCMStoreImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMStoreImpl);
 };
 
 }  // namespace gcm
 
 #endif  // GOOGLE_APIS_GCM_ENGINE_GCM_STORE_IMPL_H_