Revert of Disable WebRtcVideoQualityBrowserTest on Mac

chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc

Index: chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc
diff --git a/chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc b/chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc
index 5f10376b3df6c759ee59f50cd610c3cf0cc5600e..f7931d2570e33f09a7e91a06348ee37e48a5c5b4 100644
--- a/chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc
+++ b/chrome/browser/media/webrtc/webrtc_video_quality_browsertest.cc
@@ -344,19 +344,11 @@
 
 IN_PROC_BROWSER_TEST_P(WebRtcVideoQualityBrowserTest,
                        MANUAL_TestVideoQualityVp8) {
-// Disable these tests until crbug.com/711400 is addressed.
-#if defined(OS_MACOSX)
-  return;
-#endif  // defined(OS_MACOSX)
   TestVideoQuality("VP8");
 }
 
 IN_PROC_BROWSER_TEST_P(WebRtcVideoQualityBrowserTest,
                        MANUAL_TestVideoQualityVp9) {
-// Disable these tests until crbug.com/711400 is addressed.
-#if defined(OS_MACOSX)
-  return;
-#endif  // defined(OS_MACOSX)
   TestVideoQuality("VP9");
 }
 
@@ -364,10 +356,6 @@
 
 IN_PROC_BROWSER_TEST_P(WebRtcVideoQualityBrowserTest,
                        MANUAL_TestVideoQualityH264) {
-// Disable these tests until crbug.com/711400 is addressed.
-#if defined(OS_MACOSX)
-  return;
-#endif  // defined(OS_MACOSX)
   // Only run test if run-time feature corresponding to |rtc_use_h264| is on.
   if (!base::FeatureList::IsEnabled(content::kWebRtcH264WithOpenH264FFmpeg)) {
     LOG(WARNING) << "Run-time feature WebRTC-H264WithOpenH264FFmpeg disabled. "