Enable auto-refreshing of the gcm-internals page whenever a GCM activity is recorded.

google_apis/gcm/gcm_client.h

Index: google_apis/gcm/gcm_client.h
diff --git a/google_apis/gcm/gcm_client.h b/google_apis/gcm/gcm_client.h
index 28c9ef2b453d5c837285bbaca997b379ed9c0e38..ff9eb4140114460bdb9ab901af2095311b7e1a99 100644
--- a/google_apis/gcm/gcm_client.h
+++ b/google_apis/gcm/gcm_client.h
@@ -156,6 +156,10 @@ class GCM_EXPORT GCMClient {
     // finished loading from the GCM store and retrieved the device check-in
     // from the server if it hadn't yet.
     virtual void OnGCMReady() = 0;
+
+    // Called when activities are being recorded and a new activity has just
+    // been recorded.
+    virtual void OnActivityRecorded() = 0;
   };
 
   GCMClient();