Disable 3 tests in media_source_browsertest.cc

TBR=hbos@chromium.org
NOTRY=true

Bug: 1010061
Change-Id: Ifd0d117a1f5ab110acb1456cad577d9394acaf13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833287Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701581}

content/browser/media/media_source_browsertest.cc

@@ -61,9 +61,10 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioOnly_AAC_ADTS) {
 }
 #endif
 
+// crbug.com/1010061: disabled due to flakiness.
 // Opus is not supported in Android as of now.
 #if !defined(OS_ANDROID)
-IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioOnly_Opus_WebM) {
+IN_PROC_BROWSER_TEST_F(MediaSourceTest, DISABLED_Playback_AudioOnly_Opus_WebM) {
   TestSimplePlayback("bear-opus.webm", media::kEnded);
 }
 #endif
@@ -86,8 +87,10 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, ConfigChangeVideo) {
                    true);
 }
 
+// crbug.com/1010061: disabled due to flakiness.
 #if BUILDFLAG(USE_PROPRIETARY_CODECS)
-IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_Video_MP4_Audio_WEBM) {
+IN_PROC_BROWSER_TEST_F(MediaSourceTest,
+                       DISABLED_Playback_Video_MP4_Audio_WEBM) {
   auto query_params = GetAudioVideoQueryParams("bear-320x240-audio-only.webm",
                                                "bear-640x360-v_frag.mp4");
   RunMediaTestPage("mse_different_containers.html", std::move(query_params),
@@ -103,7 +106,8 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_Video_WEBM_Audio_MP4) {
 
 #endif  // BUILDFLAG(USE_PROPRIETARY_CODECS)
 
-IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioOnly_FLAC_MP4) {
+// crbug.com/1010061: disabled due to flakiness.
+IN_PROC_BROWSER_TEST_F(MediaSourceTest, DISABLED_Playback_AudioOnly_FLAC_MP4) {
   TestSimplePlayback("bear-flac_frag.mp4", media::kEnded);
 }