Disable FullStackTest.SimulcastFullHdOveruse on Mac

webrtc/video/full_stack_tests.cc

 /*
  *  Copyright (c) 2013 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.
  */
 #include <stdio.h>
@@ skipping 447 matching lines @@
   simulcast.video = kSvcVp9Video;
   simulcast.analyzer = {"vp9svc_3sl_low", 0.0, 0.0, kFullStackTestDurationSecs};
   simulcast.logs = false;
   simulcast.ss = {std::vector<VideoStream>(),  0,    3, 0,
                   std::vector<SpatialLayer>(), false};
   RunTest(simulcast);
 }
 #endif  // !defined(RTC_DISABLE_VP9)
 
 // Android bots can't handle FullHD, so disable the test.
-#if defined(WEBRTC_ANDROID)
+// Test is not working correctly on Mac: webrtc:7870.
+#if defined(WEBRTC_ANDROID) || defined(WEBRTC_MAC)
 #define MAYBE_SimulcastFullHdOveruse DISABLED_SimulcastFullHdOveruse
 #else
 #define MAYBE_SimulcastFullHdOveruse SimulcastFullHdOveruse
 #endif
 
 TEST_F(FullStackTest, MAYBE_SimulcastFullHdOveruse) {
   VideoQualityTest::Params simulcast;
   simulcast.call.send_side_bwe = true;
   simulcast.video = {true,    1920, 1080, 30, 800000, 2500000,
                      2500000, false,        "VP8",        3,  2,      400000,
@@ skipping 151 matching lines @@
   std::vector<VideoStream> streams = {DefaultVideoStream(video_params_low),
                                       DefaultVideoStream(video_params_medium),
                                       DefaultVideoStream(video_params_high)};
   large_room.num_thumbnails = 50;
   large_room.ss = {streams, 2, 1, 0, std::vector<SpatialLayer>(), false};
   RunTest(large_room);
 }
 
 
 }  // namespace webrtc