Link GCM heartbeat with wake on wifi preference

components/gcm_driver/gcm_client.h

Index: components/gcm_driver/gcm_client.h
diff --git a/components/gcm_driver/gcm_client.h b/components/gcm_driver/gcm_client.h
index 9956c1003e93e3125866b2f2c0eb5fc8a126af53..b17a2245bdc5f1c670ef1f3b25b022025d57f219 100644
--- a/components/gcm_driver/gcm_client.h
+++ b/components/gcm_driver/gcm_client.h
@@ -20,6 +20,7 @@ class GURL;
 namespace base {
 class FilePath;
 class SequencedTaskRunner;
+class Timer;
 }
 
 namespace net {
@@ -299,6 +300,9 @@ class GCMClient {
 
   // Sets last token fetch time in persistent store.
   virtual void SetLastTokenFetchTime(const base::Time& time) = 0;
+
+  // Updates the timer used by the HeartbeatManager for sending heartbeats.
+  virtual void UpdateHeartbeatTimer(scoped_ptr<base::Timer> timer) = 0;
 };
 
 }  // namespace gcm