Remove AudioDecoder from the Filter heirarchy.

media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
   },
@@ skipping 78 matching lines @@
         'audio/win/audio_manager_win.cc',
         'audio/win/audio_manager_win.h',
         'audio/win/avrt_wrapper_win.cc',
         'audio/win/avrt_wrapper_win.h',
         'audio/win/device_enumeration_win.cc',
         'audio/win/device_enumeration_win.h',
         '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/audio_decoder.cc',
+        'base/audio_decoder.h',
         'base/audio_decoder_config.cc',
         'base/audio_decoder_config.h',
         'base/bitstream_buffer.h',
         'base/buffers.cc',
         'base/buffers.h',
         'base/byte_queue.cc',
         'base/byte_queue.h',
         'base/channel_layout.cc',
         'base/channel_layout.h',
         'base/clock.cc',
@@ skipping 790 matching lines @@
             '../third_party/ffmpeg/ffmpeg.gyp:ffmpeg',
           ],
           'sources': [
             'tools/media_bench/media_bench.cc',
           ],
         },
       ],
     }]
   ],
 }