Introduce AudioDecoderConfig to migrate away from GetAVStream().

media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
   },
@@ skipping 66 matching lines @@
         'audio/simple_sources.cc',
         'audio/simple_sources.h',
         'audio/win/audio_manager_win.h',
         'audio/win/audio_manager_win.cc',
         'audio/win/wavein_input_win.cc',
         'audio/win/wavein_input_win.h',
         'audio/win/waveout_output_win.cc',
         'audio/win/waveout_output_win.h',
         'base/async_filter_factory_base.cc',
         'base/async_filter_factory_base.h',
+        'base/audio_decoder_config.cc',
+        'base/audio_decoder_config.h',
         'base/bitstream_buffer.h',
         'base/buffers.cc',
         'base/buffers.h',
         'base/callback.cc',
         'base/callback.h',
         'base/channel_layout.cc',
         'base/channel_layout.h',
         'base/clock.cc',
         'base/clock.h',
         'base/composite_data_source_factory.cc',
@@ skipping 757 matching lines @@
             'tools/player_x11/gl_video_renderer.h',
             'tools/player_x11/player_x11.cc',
             'tools/player_x11/x11_video_renderer.cc',
             'tools/player_x11/x11_video_renderer.h',
           ],
         },
       ],
     }],
   ],
 }