Refactor content::RenderAudioSourceProvider as webkit_media::WebAudioSourceProviderImpl.

webkit/media/webkit_media.gypi

 # 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': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../../..',
       },{
@@ skipping 63 matching lines @@
         'filter_helpers.cc',
         'filter_helpers.h',
         'media_stream_audio_renderer.cc',
         'media_stream_audio_renderer.h',
         'media_stream_client.h',
         'preload.h',
         'simple_video_frame_provider.cc',
         'simple_video_frame_provider.h',
         'video_frame_provider.cc',
         'video_frame_provider.h',
+        'webaudiosourceprovider_impl.cc',
+        'webaudiosourceprovider_impl.h',
         'webmediaplayer_delegate.h',
         'webmediaplayer_impl.cc',
         'webmediaplayer_impl.h',
         'webmediaplayer_ms.cc',
         'webmediaplayer_ms.h',
         'webmediaplayer_params.cc',
         'webmediaplayer_params.h',
         'webmediaplayer_proxy.cc',
         'webmediaplayer_proxy.h',
         'webmediaplayer_util.cc',
@@ skipping 121 matching lines @@
               # Not to strip important symbols by -Wl,-dead_strip.
               '-Wl,-exported_symbol,_PPP_GetInterface',
               '-Wl,-exported_symbol,_PPP_InitializeModule',
               '-Wl,-exported_symbol,_PPP_ShutdownModule'
             ]},
         }],
       ],
     }
   ],
 }