[GCM] Move registration info persistence from extension state store to GCM store

google_apis/gcm/engine/gcm_store_impl.h

Index: google_apis/gcm/engine/gcm_store_impl.h
diff --git a/google_apis/gcm/engine/gcm_store_impl.h b/google_apis/gcm/engine/gcm_store_impl.h
index 88ed164c7da74666dbe68be0d347b19d1cfd0857..971367a8bf01960fad72894a6f4dc453a99f0c0c 100644
--- a/google_apis/gcm/engine/gcm_store_impl.h
+++ b/google_apis/gcm/engine/gcm_store_impl.h
@@ -46,6 +46,13 @@ class GCM_EXPORT GCMStoreImpl : public GCMStore {
                                     uint64 device_security_token,
                                     const UpdateCallback& callback) OVERRIDE;
 
+  // Registration info.
+  virtual void AddRegistration(const std::string& app_id,
+                               const linked_ptr<RegistrationInfo>& registration,
+                               const UpdateCallback& callback) OVERRIDE;
+  virtual void RemoveRegistration(const std::string& app_id,
+                                  const UpdateCallback& callback) OVERRIDE;
+
   // Unacknowledged incoming message handling.
   virtual void AddIncomingMessage(const std::string& persistent_id,
                                   const UpdateCallback& callback) OVERRIDE;
@@ -67,15 +74,6 @@ class GCM_EXPORT GCMStoreImpl : public GCMStore {
   virtual void RemoveOutgoingMessages(const PersistentIdList& persistent_ids,
                                       const UpdateCallback& callback) OVERRIDE;
 
-  // User serial number handling.
-  virtual void SetNextSerialNumber(int64 next_serial_number,
-                                   const UpdateCallback& callback) OVERRIDE;
-  virtual void AddUserSerialNumber(const std::string& username,
-                                   int64 serial_number,
-                                   const UpdateCallback& callback) OVERRIDE;
-  virtual void RemoveUserSerialNumber(const std::string& username,
-                                      const UpdateCallback& callback) OVERRIDE;
-
  private:
   typedef std::map<std::string, int> AppIdToMessageCountMap;