[chromecast] Adds MediaSinkDefault.

chromecast/media/cma/backend/BUILD.gn

 # Copyright 2015 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/chromecast_build.gni")
 
 source_set("backend") {
   sources = [
     "audio_decoder_wrapper.cc",
     "audio_decoder_wrapper.h",
@@ skipping 36 matching lines @@
 }
 
 # Default implementation of media backend used on desktop.
 source_set("default") {
   sources = [
     "audio_decoder_default.cc",
     "audio_decoder_default.h",
     "cast_media_default.cc",
     "media_pipeline_backend_default.cc",
     "media_pipeline_backend_default.h",
+    "media_sink_default.cc",
+    "media_sink_default.h",
     "video_decoder_default.cc",
     "video_decoder_default.h",
   ]
 
   deps = [
     "//base",
     "//chromecast/base",
     "//chromecast/public/media",
+    "//media",
   ]
 }
 
 # Dummy implementation of media backend used on chromecast devices.
 # Must not depend on anything outside //chromecast/public.
 source_set("dummy") {
   sources = [
     "cast_media_dummy.cc",
   ]
 
   deps = [
     "//chromecast/public",
   ]
 }
 
 # Implementation of video decoder that discards decoder buffers.
 # Used on audio platforms for media streams containing video.
 source_set("null") {
   sources = [
     "video_decoder_null.cc",
     "video_decoder_null.h",
   ]
 
   deps = [
     "//base",
     "//chromecast/public/media",
   ]
 }