Fixed all unused-variable Clang warnings on Windows.

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/memory/aligned_memory.h"
@@ skipping 14 matching lines @@
 using ::testing::DoAll;
 using ::testing::Field;
 using ::testing::Invoke;
 using ::testing::InSequence;
 using ::testing::NiceMock;
 using ::testing::NotNull;
 using ::testing::Return;
 
 namespace media {
 
-static const wchar_t kAudioFile1_16b_m_16K[]
-    = L"media\\test\\data\\sweep02_16b_mono_16KHz.raw";
-
 static int ClearData(AudioBus* audio_bus, uint32 total_bytes_delay) {
   audio_bus->Zero();
   return audio_bus->frames();
 }
 
 // This class allows to find out if the callbacks are occurring as
 // expected and if any error has been reported.
 class TestSourceBasic : public AudioOutputStream::AudioSourceCallback {
  public:
   explicit TestSourceBasic()
@@ skipping 572 matching lines @@
   oas->Start(&source);
 
   ::WaitForSingleObject(thread, INFINITE);
   ::CloseHandle(thread);
 
   oas->Stop();
   oas->Close();
 }
 
 }  // namespace media