[GCM] Wiring heartbeat interval calls to GCMDriver

components/gcm_driver/gcm_driver_android.cc

Index: components/gcm_driver/gcm_driver_android.cc
diff --git a/components/gcm_driver/gcm_driver_android.cc b/components/gcm_driver/gcm_driver_android.cc
index ec69952ffc3f0cfbe6fc091547d90c4ffa6c6a72..b5960fcacd6a847f21ea2b38039df6be70f48a39 100644
--- a/components/gcm_driver/gcm_driver_android.cc
+++ b/components/gcm_driver/gcm_driver_android.cc
@@ -167,6 +167,13 @@ InstanceIDStore* GCMDriverAndroid::GetInstanceIDStore() {
   return NULL;
 }
 
+void GCMDriverAndroid::AddHeartbeatInterval(const std::string& scope,
+                                            int interval_ms) {
+}
+
+void GCMDriverAndroid::RemoveHeartbeatInterval(const std::string& scope) {
+}
+
 GCMClient::Result GCMDriverAndroid::EnsureStarted(
     GCMClient::StartMode start_mode) {
   // TODO(johnme): Maybe we should check if GMS is available?