Avoid deadlock between Pipeline and RendererImpl.

content/browser/media/media_browsertest.cc

Index: content/browser/media/media_browsertest.cc
diff --git a/content/browser/media/media_browsertest.cc b/content/browser/media/media_browsertest.cc
index 1bc617c6db630b46021a04a7892605dd6deb3976..0ffc029d80e1030f4def70163c0da87eeed79aee 100644
--- a/content/browser/media/media_browsertest.cc
+++ b/content/browser/media/media_browsertest.cc
@@ -110,8 +110,6 @@ class MediaTest : public testing::WithParamInterface<bool>,
   }
 };
 
-// http://crbug.com/407452
-#if !defined(THREAD_SANITIZER)
 IN_PROC_BROWSER_TEST_P(MediaTest, VideoBearTheora) {
   PlayVideo("bear.ogv", GetParam());
 }
@@ -236,13 +234,10 @@ IN_PROC_BROWSER_TEST_F(MediaTest, Navigate) {
   NavigateToURL(shell(), GURL(url::kAboutBlankURL));
   EXPECT_FALSE(shell()->web_contents()->IsCrashed());
 }
-#endif  // !defined(THREAD_SANITIZER)
 
 INSTANTIATE_TEST_CASE_P(File, MediaTest, ::testing::Values(false));
 INSTANTIATE_TEST_CASE_P(Http, MediaTest, ::testing::Values(true));
 
-// http://crbug.com/407452
-#if !defined(THREAD_SANITIZER)
 IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv420pTheora)) {
   RunColorFormatTest("yuv420p.ogv", kEnded);
 }
@@ -263,8 +258,6 @@ IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv444pVp9)) {
   RunColorFormatTest("yuv444p.webm", "ENDED");
 }
 
-#endif  // !defined(THREAD_SANITIZER)
-
 #if defined(USE_PROPRIETARY_CODECS)
 IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv420pH264)) {
   RunColorFormatTest("yuv420p.mp4", kEnded);