Adding callback support to media filter Initialize() and Seek().

media/media.gyp

 # Copyright (c) 2009 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,
   },
   'includes': [
     '../build/common.gypi',
@@ skipping 137 matching lines @@
       ],
       'sources': [
         'audio/win/audio_output_win_unittest.cc',
         'audio/mac/audio_output_mac_unittest.cc',
         'audio/simple_sources_unittest.cc',
         'base/buffer_queue_unittest.cc',
         'base/data_buffer_unittest.cc',
         'base/mock_ffmpeg.cc',
         'base/mock_ffmpeg.h',
         'base/mock_filter_host.h',
+        'base/mock_filters.cc',
         'base/mock_filters.h',
         'base/mock_reader.h',
         'base/pipeline_impl_unittest.cc',
         'base/run_all_unittests.cc',
         'base/seekable_buffer_unittest.cc',
         'base/video_frame_impl_unittest.cc',
         'base/yuv_convert_unittest.cc',
+        'filters/audio_renderer_base_unittest.cc',
         'filters/ffmpeg_demuxer_unittest.cc',
         'filters/ffmpeg_glue_unittest.cc',
         'filters/ffmpeg_video_decoder_unittest.cc',
         'filters/file_data_source_unittest.cc',
+        'filters/video_renderer_base_unittest.cc',
       ],
       'conditions': [
         ['OS=="linux"', {
           'dependencies': [
             # Needed for the following #include chain:
             #   base/run_all_unittests.cc
             #   ../base/test_suite.h
             #   gtk/gtk.h
             '../build/linux/system.gyp:gtk',
           ],
@@ skipping 55 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     }],
   ],
 }