Revert of Chromecast: Play audio streams not supported by CMA via default renderer

chromecast/media/base/switching_media_renderer.h

-// Copyright 2015 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 CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_
-#define CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "media/base/renderer.h"
-
-namespace media {
-class DemuxerStreamProvider;
-}
-
-namespace chromecast {
-namespace media {
-
-// Chromecast's custom media renderer which is capable of selecting an
-// appropriate media renderer at runtime depending on the content.
-// We'll look at media types of media streams present in DemuxerStreamProvider
-// and will use either CMA-based renderer (for media types that are supported by
-// our hardware decoder - H264 and VP8 video, AAC and Vorbis audio) or the
-// default Chrome media renderer (this will allow us to support audio codecs
-// like FLAC and Opus, which are decoded in software).
-class SwitchingMediaRenderer : public ::media::Renderer {
- public:
-  SwitchingMediaRenderer(
-      scoped_ptr<::media::Renderer> default_renderer,
-      scoped_ptr<::media::Renderer> cma_renderer);
-  ~SwitchingMediaRenderer() override;
-
-  // ::media::Renderer implementation:
-  void Initialize(
-      ::media::DemuxerStreamProvider* demuxer_stream_provider,
-      const base::Closure& init_cb,
-      const ::media::StatisticsCB& statistics_cb,
-      const ::media::BufferingStateCB& buffering_state_cb,
-      const ::media::Renderer::PaintCB& paint_cb,
-      const base::Closure& ended_cb,
-      const ::media::PipelineStatusCB& error_cb) override;
-  void SetCdm(::media::CdmContext* cdm_context,
-              const ::media::CdmAttachedCB& cdm_attached_cb) override;
-  void Flush(const base::Closure& flush_cb) override;
-  void StartPlayingFrom(base::TimeDelta time) override;
-  void SetPlaybackRate(float playback_rate) override;
-  void SetVolume(float volume) override;
-  base::TimeDelta GetMediaTime() override;
-  bool HasAudio() override;
-  bool HasVideo() override;
-
- private:
-  // Returns the pointer to the actual renderer being used
-  ::media::Renderer* GetRenderer() const;
-
-  ::media::DemuxerStreamProvider* demuxer_stream_provider_;
-  scoped_ptr<::media::Renderer> default_renderer_;
-  scoped_ptr<::media::Renderer> cma_renderer_;
-
-  DISALLOW_COPY_AND_ASSIGN(SwitchingMediaRenderer);
-};
-
-}  // namespace media
-}  // namespace chromecast
-
-#endif  // CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_