Cleanup OPUS decoder. Remove extraneous transforms and copies.

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 cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 542 matching lines @@
           'dependencies': [
             'media_android_jni_headers',
             'player_android',
             'video_capture_android_jni_headers',
           ],
           'sources': [
             'base/media.cc',
             'base/media.h',
             'base/media_stub.cc',
           ],
+          'sources!': [
+            'filters/opus_audio_decoder.cc',
+            'filters/opus_audio_decoder.h',
+          ],
           'conditions': [
             ['android_webview_build==0', {
               'dependencies': [
                 'media_java',
               ],
             }],
           ],
           'defines': [
             'DISABLE_USER_INPUT_MONITOR',
           ],
@@ skipping 1063 matching lines @@
                   ],
                 }],
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }