RTCMediaStreamTrackStats.framesDropped collected by RTCStatsCollector.

webrtc/api/rtcstats_integrationtest.cc

Index: webrtc/api/rtcstats_integrationtest.cc
diff --git a/webrtc/api/rtcstats_integrationtest.cc b/webrtc/api/rtcstats_integrationtest.cc
index 5ded4470ea5fb13d019e4f7a91e869f435bc08a8..451aa9773d7ce38e8a5b70f6f49cf56b23349540 100644
--- a/webrtc/api/rtcstats_integrationtest.cc
+++ b/webrtc/api/rtcstats_integrationtest.cc
@@ -442,11 +442,14 @@ class RTCStatsReportVerifier {
       if (*media_stream_track.remote_source) {
         verifier.TestMemberIsNonNegative<uint32_t>(
             media_stream_track.frames_received);
+        verifier.TestMemberIsUndefined(media_stream_track.frames_decoded);
+        verifier.TestMemberIsNonNegative<uint32_t>(
+            media_stream_track.frames_dropped);
       } else {
         verifier.TestMemberIsUndefined(media_stream_track.frames_received);
+        verifier.TestMemberIsUndefined(media_stream_track.frames_decoded);
+        verifier.TestMemberIsUndefined(media_stream_track.frames_dropped);
       }
-      verifier.TestMemberIsUndefined(media_stream_track.frames_decoded);
-      verifier.TestMemberIsUndefined(media_stream_track.frames_dropped);
       verifier.TestMemberIsUndefined(media_stream_track.frames_corrupted);
       verifier.TestMemberIsUndefined(media_stream_track.partial_frames_lost);
       verifier.TestMemberIsUndefined(media_stream_track.full_frames_lost);