Introduce media::RendererFactory interface.

media/BUILD.gn

 # 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
@@ skipping 83 matching lines @@
     "filters/decoder_stream.cc",
     "filters/decoder_stream.h",
     "filters/decoder_stream_traits.cc",
     "filters/decoder_stream_traits.h",
     "filters/decrypting_audio_decoder.cc",
     "filters/decrypting_audio_decoder.h",
     "filters/decrypting_demuxer_stream.cc",
     "filters/decrypting_demuxer_stream.h",
     "filters/decrypting_video_decoder.cc",
     "filters/decrypting_video_decoder.h",
+    "filters/default_renderer_factory.cc",
+    "filters/default_renderer_factory.h",
     "filters/file_data_source.cc",
     "filters/file_data_source.h",
     "filters/frame_processor.cc",
     "filters/frame_processor.h",
     "filters/gpu_video_accelerator_factories.cc",
     "filters/gpu_video_accelerator_factories.h",
     "filters/gpu_video_decoder.cc",
     "filters/gpu_video_decoder.h",
     "filters/h264_bit_reader.cc",
     "filters/h264_bit_reader.h",
@@ skipping 665 matching lines @@
     deps = [
       ":media",
       ":shared_memory_support",
       "//base",
       "//ui/gl",
       "//ui/gfx",
       "//ui/gfx/geometry",
     ]
   }
 }