Revert r95841 due to failing media_unittests on linux_shared bot.

media/filters/audio_renderer_impl.h

 // Copyright (c) 2011 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.
 
 #ifndef MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_
 #define MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_
 
 // This is the default implementation of AudioRenderer, which uses the audio
 // interfaces to open an audio device.  Although it cannot be used in the
 // sandbox, it serves as a reference implementation and can be used in other
 // applications such as the test player.
 //
 // Note: THIS IS NOT THE AUDIO RENDERER USED IN CHROME.
 //
 // See src/chrome/renderer/media/audio_renderer_impl.h for chrome's
 // implementation.
 
 #include <deque>
 
 #include "media/audio/audio_io.h"
 #include "media/base/buffers.h"
 #include "media/base/filters.h"
 #include "media/filters/audio_renderer_base.h"
 
 namespace media {
 
-class MEDIA_EXPORT AudioRendererImpl
+class AudioRendererImpl
     : public AudioRendererBase,
       public AudioOutputStream::AudioSourceCallback {
  public:
   AudioRendererImpl();
   virtual ~AudioRendererImpl();
 
   // Filter implementation.
   virtual void SetPlaybackRate(float playback_rate);
 
   // AudioRenderer implementation.
@@ skipping 14 matching lines @@
   // Audio output stream device.
   AudioOutputStream* stream_;
   int bytes_per_second_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_