Chromecast: adds interfaces for hardware layer of CMA pipeline.

chromecast/media/cma/backend/media_pipeline_device_fake_factory.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_fake.h"
+
+#include "base/memory/scoped_ptr.h"
+
+namespace chromecast {
+namespace media {
+
+scoped_ptr<MediaPipelineDevice> CreateMediaPipelineDevice(
+    const MediaPipelineDeviceParams& params) {
+  return scoped_ptr<MediaPipelineDevice>(new MediaPipelineDeviceFake());
+}
+
+}  // namespace media
+}  // namespace chromecast