Disables failing (low-latency) audio unit tests on Windows 7.

media/audio/win/audio_output_win_unittest.cc

 // Copyright (c) 2012 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 <windows.h>
 #include <mmsystem.h>
 
 #include "base/basictypes.h"
 #include "base/base_paths.h"
 #include "base/file_util.h"
@@ skipping 518 matching lines @@
   oas->Start(&source);
   ::Sleep(500);
   oas->Stop();
 
   oas->Close();
 }
 
 // With the low latency mode, WASAPI is utilized by default for Vista and
 // higher and Wave is used for XP and lower. It is possible to utilize a
 // smaller buffer size for WASAPI than for Wave.
-TEST(WinAudioTest, PCMWaveStreamPlay200HzToneLowLatency) {
+// TODO(henrika): enable this test again using an improved fall-back
+// mechanism for those platforms which does not support mono output.
+// See crbug.com/112986 for details.
+TEST(WinAudioTest, DISABLED_PCMWaveStreamPlay200HzToneLowLatency) {
   scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices()) {
     LOG(WARNING) << "No output device detected.";
     return;
   }
 
   // The WASAPI API requires a correct COM environment.
   ScopedCOMInitializer com_init(ScopedCOMInitializer::kMTA);
 
   // Use 10 ms buffer size for WASAPI and 50 ms buffer size for Wave.
@@ skipping 180 matching lines @@
                                  &thread_context, 0, NULL);
 
   oas->Start(&source);
 
   ::WaitForSingleObject(thread, INFINITE);
   ::CloseHandle(thread);
 
   oas->Stop();
   oas->Close();
 }