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 ffee1aec1552692f285389a6ac759d3e145a9063..bc2afb228b233b3c46d1c89ff246a88b7875d029 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 Delegate {
+   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 callback from the recorder.
+  void SetDelegate(Delegate* delegate);
+
   // Clear all recorded activities.
   void Clear();
 
@@ -219,19 +231,27 @@ 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,
                         const std::string& details);
+
   void RecordRegistration(const std::string& app_id,
                           const std::string& sender_id,
                           const std::string& event,
                           const std::string& details);
+
   void RecordReceiving(const std::string& app_id,
                        const std::string& from,
                        int message_byte_size,
                        const std::string& event,
                        const std::string& details);
+
   void RecordSending(const std::string& app_id,
                      const std::string& receiver_id,
                      const std::string& message_id,
@@ -239,6 +259,7 @@ class GCM_EXPORT GCMStatsRecorder {
                      const std::string& details);
 
   bool is_recording_;
+  Delegate* delegate_;
 
   std::deque<CheckinActivity> checkin_activities_;
   std::deque<ConnectionActivity> connection_activities_;