Disable flaky AudioStats.NoLoss test.

audio/test/audio_stats_test.cc

 /*
  *  Copyright (c) 2017 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 91 matching lines @@
     // Match these stats between caller and receiver.
     EXPECT_EQ(send_stats.local_ssrc, recv_stats.remote_ssrc);
     EXPECT_EQ(*send_stats.codec_payload_type, *recv_stats.codec_payload_type);
     EXPECT_TRUE(rtc::SafeEq(send_stats.ext_seqnum, recv_stats.ext_seqnum));
   }
 };
 }  // namespace
 
 using AudioStatsTest = CallTest;
 
-TEST_F(AudioStatsTest, NoLoss) {
+TEST_F(AudioStatsTest, DISABLED_NoLoss) {
   NoLossTest test;
   RunBaseTest(&test);
 }
 
 }  // namespace test
 }  // namespace webrtc