Re-enable NonBlockingEventBrowserTest on Win8 TSan Build.

content/browser/renderer_host/input/non_blocking_event_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 149 matching lines @@
     // Expect that the compositor scrolled at least one pixel while the
     // main thread was in a busy loop.
     while (frame_watcher->LastMetadata().root_scroll_offset.y() <= 0)
       frame_watcher->WaitFrames(1);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NonBlockingEventBrowserTest);
 };
 
-// Also appears to be flaky under TSan. crbug.com/588199
-#if defined(THREAD_SANITIZER)
-#define MAYBE_MouseWheel DISABLED_MouseWheel
-#else
-#define MAYBE_MouseWheel MouseWheel
-#endif
-IN_PROC_BROWSER_TEST_F(NonBlockingEventBrowserTest, MAYBE_MouseWheel) {
+IN_PROC_BROWSER_TEST_F(NonBlockingEventBrowserTest, MouseWheel) {
   LoadURL();
   DoWheelScroll();
 }
 
 // Disabled on MacOS because it doesn't support touch input.
 #if defined(OS_MACOSX)
 #define MAYBE_TouchStart DISABLED_TouchStart
 #else
 #define MAYBE_TouchStart TouchStart
 #endif
 IN_PROC_BROWSER_TEST_F(NonBlockingEventBrowserTest, MAYBE_TouchStart) {
   LoadURL();
   DoTouchScroll();
 }
 
 }  // namespace content