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..159b1e581dc294e3671a5d4e8f9d668521d913ed 100644
--- a/components/gcm_driver/gcm_stats_recorder_impl.h
+++ b/components/gcm_driver/gcm_stats_recorder_impl.h
@@ -147,6 +147,9 @@ class GCMStatsRecorderImpl : public GCMStatsRecorder {
   std::deque<ReceivingActivity> receiving_activities_;
   std::deque<SendingActivity> sending_activities_;
 
+  base::Time last_connection_initiation_time_;
+  base::Time last_connection_success_time_;
+  bool data_message_received_since_connected_;
   base::Time last_received_data_message_burst_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMStatsRecorderImpl);