Load CMA backend from shared library

chromecast/media/cma/backend/media_pipeline_device.cc

-// 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.
-
-#include "chromecast/media/cma/backend/media_pipeline_device.h"
-
-#include "chromecast/media/cma/backend/audio_pipeline_device_default.h"
-#include "chromecast/media/cma/backend/media_clock_device_default.h"
-#include "chromecast/media/cma/backend/media_pipeline_device_factory.h"
-#include "chromecast/media/cma/backend/video_pipeline_device_default.h"
-
-namespace chromecast {
-namespace media {
-
-MediaPipelineDevice::MediaPipelineDevice(
-    scoped_ptr<MediaPipelineDeviceFactory> factory)
-    : media_clock_device_(factory->CreateMediaClockDevice()),
-      audio_pipeline_device_(factory->CreateAudioPipelineDevice()),
-      video_pipeline_device_(factory->CreateVideoPipelineDevice()) {
-}
-
-MediaPipelineDevice::MediaPipelineDevice(
-    scoped_ptr<MediaClockDevice> media_clock_device,
-    scoped_ptr<AudioPipelineDevice> audio_pipeline_device,
-    scoped_ptr<VideoPipelineDevice> video_pipeline_device)
-    : media_clock_device_(media_clock_device.Pass()),
-      audio_pipeline_device_(audio_pipeline_device.Pass()),
-      video_pipeline_device_(video_pipeline_device.Pass()) {
-}
-
-MediaPipelineDevice::~MediaPipelineDevice() {
-}
-
-}  // namespace media
-}  // namespace chromecast