Re-enable local video test with better logging and higher tolerance.

content/browser/media/webrtc_browsertest.cc

Index: content/browser/media/webrtc_browsertest.cc
diff --git a/content/browser/media/webrtc_browsertest.cc b/content/browser/media/webrtc_browsertest.cc
index b54c3ac092976d118140bce0bd9cb289fd5dc0dd..18e1988a880750806332db92b7ec076122d0b3b6 100644
--- a/content/browser/media/webrtc_browsertest.cc
+++ b/content/browser/media/webrtc_browsertest.cc
@@ -144,9 +144,15 @@ IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserTest,
 }
 
 // Flaky on TSAN v2. http://crbug.com/408006
-// Flaky everywhere: http://crbug.com/477498
+#if defined(THREAD_SANITIZER)
+#define MAYBE_CanSetupVideoCallAndDisableLocalVideo \
+  DISABLED_CanSetupVideoCallAndDisableLocalVideo
+#else
+#define MAYBE_CanSetupVideoCallAndDisableLocalVideo \
+  CanSetupVideoCallAndDisableLocalVideo
+#endif
 IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserTest,
-                       DISABLED_CanSetupVideoCallAndDisableLocalVideo) {
+                       MAYBE_CanSetupVideoCallAndDisableLocalVideo) {
   const std::string javascript =
       "callAndDisableLocalVideo({video: true});";
   MakeTypicalPeerConnectionCall(javascript);