[Chromecast] Add CmaMediaRendererFactory and IPC proxy components

chromecast/common/media/cma_ipc_common.h

Index: chromecast/common/media/cma_ipc_common.h
diff --git a/chromecast/media/cma/pipeline/media_pipeline_client.cc b/chromecast/common/media/cma_ipc_common.h
similarity index 52%
copy from chromecast/media/cma/pipeline/media_pipeline_client.cc
copy to chromecast/common/media/cma_ipc_common.h
index 8dbfc8db7242383ae733254398ec3337fa11e5e1..343110451f2102046326fc9e84f2948a21dfda22 100644
--- a/chromecast/media/cma/pipeline/media_pipeline_client.cc
+++ b/chromecast/common/media/cma_ipc_common.h
@@ -2,16 +2,20 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromecast/media/cma/pipeline/media_pipeline_client.h"
+#ifndef CHROMECAST_COMMON_MEDIA_CMA_IPC_COMMON_H_
+#define CHROMECAST_COMMON_MEDIA_CMA_IPC_COMMON_H_
 
 namespace chromecast {
 namespace media {
 
-MediaPipelineClient::MediaPipelineClient() {
-}
-
-MediaPipelineClient::~MediaPipelineClient() {
-}
+enum TrackId {
+  kNoTrackId = -1,
+  kAudioTrackId = 0,
+  kVideoTrackId = 1,
+};
 
 }  // namespace media
 }  // namespace chromecast
+
+#endif  // CHROMECAST_COMMON_MEDIA_CMA_IPC_COMMON_H_
+