Fix msan flake in rtcstats_integrationtest.cc.

webrtc/api/rtcstats_integrationtest.cc

 /*
  *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 453 matching lines @@
       verifier.TestMemberIsUndefined(media_stream_track.frames_per_second);
       verifier.TestMemberIsUndefined(media_stream_track.frames_sent);
       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_corrupted);
       verifier.TestMemberIsUndefined(media_stream_track.partial_frames_lost);
       verifier.TestMemberIsUndefined(media_stream_track.full_frames_lost);
       // Audio-only members
       verifier.TestMemberIsNonNegative<double>(media_stream_track.audio_level);
-      // TODO(hbos): Find out why |echo_return_loss| and
-      // |echo_return_loss_enhancement| are undefined in the integration test.
-      // Is this a real problem or a test problem? Update test so that they are.
-      // crbug.com/627816
-      verifier.TestMemberIsUndefined(media_stream_track.echo_return_loss);
-      verifier.TestMemberIsUndefined(
-          media_stream_track.echo_return_loss_enhancement);
+      // TODO(hbos): |echo_return_loss| and |echo_return_loss_enhancement| are
+      // flaky on msan bot (sometimes defined, sometimes undefined). Should the
+      // test run until available or is there a way to have it always be
+      // defined? crbug.com/627816
+      verifier.MarkMemberTested(media_stream_track.echo_return_loss, true);
+      verifier.MarkMemberTested(
+          media_stream_track.echo_return_loss_enhancement, true);
     }
     return verifier.ExpectAllMembersSuccessfullyTested();
   }
 
   bool VerifyRTCPeerConnectionStats(
       const RTCPeerConnectionStats& peer_connection) {
     RTCStatsVerifier verifier(report_, &peer_connection);
     verifier.TestMemberIsNonNegative<uint32_t>(
         peer_connection.data_channels_opened);
     verifier.TestMemberIsNonNegative<uint32_t>(
@@ skipping 128 matching lines @@
   caller_ = nullptr;
   // Any pending stats requests should have completed in the act of destroying
   // the peer connection.
   EXPECT_TRUE(stats_obtainer->report());
 }
 #endif  // HAVE_SCTP
 
 }  // namespace
 
 }  // namespace webrtc