Track the ratio of received GCM messages for registered applications

components/gcm_driver/gcm_stats_recorder_android.cc

Index: components/gcm_driver/gcm_stats_recorder_android.cc
diff --git a/components/gcm_driver/gcm_stats_recorder_android.cc b/components/gcm_driver/gcm_stats_recorder_android.cc
index b07235cc37ad8d96501d79b06f0ce0aab1f5f161..5f89f2bcd23e68ad0e836b9044f6dcd4a74f86e9 100644
--- a/components/gcm_driver/gcm_stats_recorder_android.cc
+++ b/components/gcm_driver/gcm_stats_recorder_android.cc
@@ -106,6 +106,10 @@ void GCMStatsRecorderAndroid::RecordDataMessageReceived(
     const std::string& app_id,
     const std::string& from,
     int message_byte_size) {
+  // Active registrations are maintained by Android, not Chrome, so any
+  // received data message is per definition still registered.
+  UMA_HISTOGRAM_BOOLEAN("GCM.DataMessageReceivedHasRegisteredApp", true);

[johnme, 2016/09/26 13:29:13]

I'd lean towards not logging this - it feels misleading, since it looks as if no
messages are lost on android, when really we just don't know about them.

[Peter Beverloo, 2016/09/26 13:31:42]

Done.

+
   if (!is_recording_)
     return;