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

google_apis/gcm/monitoring/gcm_stats_recorder.h

Index: google_apis/gcm/monitoring/gcm_stats_recorder.h
diff --git a/google_apis/gcm/monitoring/gcm_stats_recorder.h b/google_apis/gcm/monitoring/gcm_stats_recorder.h
index ddae2948cc1f2785bbe1996ce9c12df95d1b4f3f..148bad700bbc5f7814bd92ac4536d6a21560a6f8 100644
--- a/google_apis/gcm/monitoring/gcm_stats_recorder.h
+++ b/google_apis/gcm/monitoring/gcm_stats_recorder.h
@@ -95,6 +95,15 @@ class GCM_EXPORT GCMStatsRecorder {
     std::vector<GCMStatsRecorder::SendingActivity> sending_activities;
   };
 
+  // A delegate interface that allows the GCMStatsRecorder instance to interact
+  // with its container.
+  class RecorderDelegate {

[jianli, 2014/05/06 22:54:53]

Simpler to name it as Delegate since it is already defined within the recorder
class.

[juyik, 2014/05/07 00:07:48]

Done.

+   public:
+    // Called when the GCMStatsRecorder is recording activities and a new
+    // activity has just been recorded.
+    virtual void OnActivityRecorded() = 0;
+  };
+
   GCMStatsRecorder();
   virtual ~GCMStatsRecorder();
 
@@ -106,6 +115,9 @@ class GCM_EXPORT GCMStatsRecorder {
   // Turns recording on/off.
   void SetRecording(bool recording);
 
+  // Set a delegate to receive async callback from the recorder.
+  void SetDelegate(RecorderDelegate* delegate);
+
   // Clear all recorded activities.
   void Clear();
 
@@ -219,6 +231,9 @@ class GCM_EXPORT GCMStatsRecorder {
   }
 
  protected:
+  // Notify the recorder delegate, if it exists, that an activity has been
+  // recorded.
+  void NotifyActivityRecorded();
   void RecordCheckin(const std::string& event,
                      const std::string& details);
   void RecordConnection(const std::string& event,
@@ -239,6 +254,7 @@ class GCM_EXPORT GCMStatsRecorder {
                      const std::string& details);
 
   bool is_recording_;
+  RecorderDelegate* delegate_;
 
   std::deque<CheckinActivity> checkin_activities_;
   std::deque<ConnectionActivity> connection_activities_;