Record latencies of connection and arrival of first message in UMA

components/gcm_driver/gcm_stats_recorder_impl.h

Index: components/gcm_driver/gcm_stats_recorder_impl.h
diff --git a/components/gcm_driver/gcm_stats_recorder_impl.h b/components/gcm_driver/gcm_stats_recorder_impl.h
index 2a7f78da1d538ed04347f3f00021b6ac5d1e47c6..3c21a0b6908914629d3f029f744ea8472a6de909 100644
--- a/components/gcm_driver/gcm_stats_recorder_impl.h
+++ b/components/gcm_driver/gcm_stats_recorder_impl.h
@@ -147,7 +147,12 @@ class GCMStatsRecorderImpl : public GCMStatsRecorder {
   std::deque<ReceivingActivity> receiving_activities_;
   std::deque<SendingActivity> sending_activities_;
 
-  base::Time last_received_data_message_burst_start_time_;
+  base::TimeTicks last_connection_initiation_time_;
+  base::TimeTicks last_connection_success_time_;
+  bool data_message_received_since_connected_;
+  base::TimeTicks last_received_data_message_burst_start_time_;
+  base::TimeTicks last_received_data_message_time_within_burst_;
+  int64 received_data_message_burst_size_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMStatsRecorderImpl);
 };