[GCM] Minimum change for periodic checkin

google_apis/gcm/gcm_client_impl.h

 // Copyright 2013 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_GCM_CLIENT_IMPL_H_
 #define GOOGLE_APIS_GCM_GCM_CLIENT_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 144 matching lines @@
   void OnFirstTimeDeviceCheckinCompleted(const CheckinInfo& checkin_info);
   // Starts a login on mcs_client_.
   void StartMCSLogin();
   // Resets state to before initialization.
   void ResetState();
   // Sets state to ready. This will initiate the MCS login and notify the
   // delegates.
   void OnReady();
 
   // Starts a first time device checkin.
-  void StartCheckin(const CheckinInfo& checkin_info);
+  void StartCheckin();
   // Completes the device checkin request.
   // |android_id| and |security_token| are expected to be non-zero or an error
   // is triggered. Function also cleans up the pending checkin.
   void OnCheckinCompleted(uint64 android_id,
                           uint64 security_token);
+  // Schedules next device checkin, based on |last_checkin_time| and default
+  // checkin interval.
+  void SchedulePeriodicCheckin(const base::Time& last_checkin_time);
+  // Callback for setting last checkin time in the |gcm_store_|.
+  void SetLastCheckinTimeCallback(bool success);
 
   // Callback for persisting device credentials in the |gcm_store_|.
   void SetDeviceCredentialsCallback(bool success);
 
   // Callback for persisting registration info in the |gcm_store_|.
   void UpdateRegistrationCallback(bool success);
 
   // Completes the registration request.
   void OnRegisterCompleted(const std::string& app_id,
                            const std::vector<std::string>& sender_ids,
@@ skipping 73 matching lines @@
 
   // Factory for creating references in callbacks.
   base::WeakPtrFactory<GCMClientImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMClientImpl);
 };
 
 }  // namespace gcm
 
 #endif  // GOOGLE_APIS_GCM_GCM_CLIENT_IMPL_H_