Added unittest to WebRtcAudioRenderer.

content/renderer/media/audio_device_factory.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
 #define CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
+#include "content/common/content_export.h"
 
 namespace media {
 class AudioInputDevice;
 class AudioOutputDevice;
 }
 
 namespace content {
 
 // A factory for creating AudioOutputDevices and AudioInputDevices.  There is a
 // global factory function that can be installed for the purposes of testing to
 // provide specialized implementations.
-class AudioDeviceFactory {
+class CONTENT_EXPORT AudioDeviceFactory {
  public:
   // Creates an AudioOutputDevice using the currently registered factory.
   // |render_view_id| and |render_frame_id| refer to the render view and render
    // frame containing the entity producing the audio.
   static scoped_refptr<media::AudioOutputDevice> NewOutputDevice(
       int render_view_id, int render_frame_id);
 
   // Creates an AudioInputDevice using the currently registered factory.
   // |render_view_id| refers to the render view containing the entity consuming
   // the audio.
@@ skipping 15 matching lines @@
   // The current globally registered factory. This is NULL when we should
   // create the default AudioRendererSinks.
   static AudioDeviceFactory* factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDeviceFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_