Chromecast: adds fake libffmpegsumo target for more graceful internal build.

chromecast/chromecast.gyp

 # Copyright 2014 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': {
     'android_support_v13_target%':
         '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
     'cast_build_release': 'internal/build/cast_build_release',
     'cast_is_debug_build%': 0,
@@ skipping 33 matching lines @@
         'public/graphics_properties_shlib.h',
         'public/graphics_types.h',
         'public/media/decoder_config.h',
         'public/media/stream_id.h',
         'public/osd_plane.h',
         'public/osd_plane_shlib.h',
         'public/osd_surface.h',
         'public/video_plane.h',
       ],
     },
-    # TODO(gunsch): Remove this fake target once it's either added or no
-    # longer referenced from internal code.
-    {'target_name': 'cast_media_audio', 'type': 'none'},
-
     {
       'target_name': 'cast_base',
       'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
       ],
       'sources': [
         'base/cast_paths.cc',
         'base/cast_paths.h',
         'base/chromecast_switches.cc',
@@ skipping 588 matching lines @@
           'sources': [
             'graphics/cast_egl_platform_default.cc',
             'graphics/graphics_properties_default.cc',
             'graphics/osd_plane_default.cc'
           ],
         }
       ]
     }],
   ],  # end of conditions
 }