Revert of Disable flaky OutOfProcessPPAPITest.MediaStreamAudioTrack on Windows

content/test/ppapi/ppapi_browsertest.cc

 // Copyright 2014 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 "content/test/ppapi/ppapi_test.h"
 #include "ppapi/shared_impl/test_harness_utils.h"
 
 // This file lists tests for Pepper APIs (without NaCl) against content_shell.
 // TODO(teravest): Move more tests here. http://crbug.com/371873
 
@@ skipping 83 matching lines @@
 IN_PROC_BROWSER_TEST_F(PPAPITest, Instance_RecursiveObjects) {
   RunTestAndReload("Instance_RecursiveObjects");
 }
 // TODO(dmichael): Make it work out-of-process (or at least see whether we
 // care).
 IN_PROC_BROWSER_TEST_F(OutOfProcessPPAPITest,
                        DISABLED_Instance_RecursiveObjects) {
   RunTestAndReload("Instance_RecursiveObjects");
 }
 
-#if defined(OS_WIN)
-// Flaky on Windows (crbug.com/438729)
-#define MAYBE_MediaStreamAudioTrack DISABLED_MediaStreamAudioTrack;
-#else
-#define MAYBE_MediaStreamAudioTrack MediaStreamAudioTrack;
-#endif
-TEST_PPAPI_OUT_OF_PROCESS(MAYBE_MediaStreamAudioTrack)
+TEST_PPAPI_OUT_OF_PROCESS(MediaStreamAudioTrack)
 
 TEST_PPAPI_OUT_OF_PROCESS(MediaStreamVideoTrack)
 
 TEST_PPAPI_IN_PROCESS(Memory)
 TEST_PPAPI_OUT_OF_PROCESS(Memory)
 
 TEST_PPAPI_OUT_OF_PROCESS(MessageHandler)
 
 TEST_PPAPI_OUT_OF_PROCESS(MessageLoop_Basics)
 TEST_PPAPI_OUT_OF_PROCESS(MessageLoop_Post)
@@ skipping 28 matching lines @@
 TEST_PPAPI_IN_PROCESS(VarResource)
 TEST_PPAPI_OUT_OF_PROCESS(VarResource)
 
 TEST_PPAPI_OUT_OF_PROCESS(VideoDecoder)
 
 TEST_PPAPI_IN_PROCESS(VideoDecoderDev)
 TEST_PPAPI_OUT_OF_PROCESS(VideoDecoderDev)
 
 }  // namespace
 }  // namespace content