Encrypted Media: Support Audio Decrypt-Only.

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,
     # Override to dynamically link the cras (ChromeOS audio) library.
@@ skipping 241 matching lines @@
         'base/video_frame.cc',
         'base/video_frame.h',
         'base/video_renderer.cc',
         'base/video_renderer.h',
         'base/video_util.cc',
         'base/video_util.h',
         'crypto/aes_decryptor.cc',
         'crypto/aes_decryptor.h',
         'ffmpeg/ffmpeg_common.cc',
         'ffmpeg/ffmpeg_common.h',
+        'filters/audio_decoder_factory.cc',
+        'filters/audio_decoder_factory.h',
         'filters/audio_file_reader.cc',
         'filters/audio_file_reader.h',
         'filters/audio_renderer_algorithm.cc',
         'filters/audio_renderer_algorithm.h',
         'filters/audio_renderer_impl.cc',
         'filters/audio_renderer_impl.h',
         'filters/blocking_url_protocol.cc',
         'filters/blocking_url_protocol.h',
         'filters/chunk_demuxer.cc',
         'filters/chunk_demuxer.h',
@@ skipping 1080 matching lines @@
             'media',
           ],
           'sources': [
             'tools/media_bench/media_bench.cc',
           ],
         },
       ],
     }]
   ],
 }