Add support for switching the audio output device for HTMLMediaElements.

media/renderers/renderer_impl.h

 // 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.
 
 #ifndef MEDIA_RENDERERS_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_RENDERER_IMPL_H_
 
+#include <string>
 #include <vector>
 
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/time/clock.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/time.h"
 #include "media/base/buffering_state.h"
 #include "media/base/decryptor.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
 #include "media/base/renderer.h"
+#include "url/gurl.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace media {
 
 class AudioRenderer;
 class DemuxerStreamProvider;
 class TimeSource;
@@ skipping 19 matching lines @@
                   const BufferingStateCB& buffering_state_cb,
                   const base::Closure& ended_cb,
                   const PipelineStatusCB& error_cb,
                   const base::Closure& waiting_for_decryption_key_cb) final;
   void SetCdm(CdmContext* cdm_context,
               const CdmAttachedCB& cdm_attached_cb) final;
   void Flush(const base::Closure& flush_cb) final;
   void StartPlayingFrom(base::TimeDelta time) final;
   void SetPlaybackRate(double playback_rate) final;
   void SetVolume(float volume) final;
+  void SwitchAudioOutputDevice(const std::string& device_id,
+                               const GURL& security_origin,
+                               const base::Callback<void(int)>& callback) final;
   base::TimeDelta GetMediaTime() final;
   bool HasAudio() final;
   bool HasVideo() final;
 
   // Helper functions for testing purposes. Must be called before Initialize().
   void DisableUnderflowForTesting();
   void EnableClocklessVideoPlaybackForTesting();
   void set_time_source_for_testing(TimeSource* time_source) {
     time_source_ = time_source;
   }
@@ skipping 117 matching lines @@
 
   base::WeakPtr<RendererImpl> weak_this_;
   base::WeakPtrFactory<RendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_RENDERER_IMPL_H_