[GCM] Reset store on checkin rejection and add checkin state to internals

components/gcm_driver/gcm_client.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 COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_
 #define COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 106 matching lines @@
    public:
     GCMStatistics();
     GCMStatistics(const GCMStatistics& other);
     ~GCMStatistics();
 
     bool is_recording;
     bool gcm_client_created;
     std::string gcm_client_state;
     bool connection_client_created;
     std::string connection_state;
+    base::Time last_checkin;
+    base::Time next_checkin;
     uint64_t android_id;
     std::vector<std::string> registered_app_ids;
     int send_queue_size;
     int resend_queue_size;
 
     RecordedActivities recorded_activities;
   };
 
   // Information about account.
   struct AccountTokenInfo {
@@ skipping 187 matching lines @@
   // to be set, and allows that component to later revoke the setting. It should
   // be unique.
   virtual void AddHeartbeatInterval(const std::string& scope,
                                     int interval_ms) = 0;
   virtual void RemoveHeartbeatInterval(const std::string& scope) = 0;
 };
 
 }  // namespace gcm
 
 #endif  // COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_