Chromecast: adds interfaces for hardware layer of CMA pipeline.

chromecast/media/cma/backend/video_pipeline_device.cc

Index: chromecast/media/cma/backend/video_pipeline_device.cc
diff --git a/chromecast/media/base/decrypt_context.cc b/chromecast/media/cma/backend/video_pipeline_device.cc
similarity index 50%
copy from chromecast/media/base/decrypt_context.cc
copy to chromecast/media/cma/backend/video_pipeline_device.cc
index 38da3af7c06bba880ddd69c0dbce3dcc4bdbbeb7..d00c2cd4afe904e29a56ff23fc8e548214086fdf 100644
--- a/chromecast/media/base/decrypt_context.cc
+++ b/chromecast/media/cma/backend/video_pipeline_device.cc
@@ -2,20 +2,21 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromecast/media/base/decrypt_context.h"
+#include "chromecast/media/cma/backend/video_pipeline_device.h"
 
 namespace chromecast {
 namespace media {
 
-DecryptContext::DecryptContext(CastKeySystem key_system)
-    : key_system_(key_system) {
+VideoPipelineDevice::VideoClient::VideoClient() {
 }
 
-DecryptContext::~DecryptContext() {
+VideoPipelineDevice::VideoClient::~VideoClient() {
 }
 
-crypto::SymmetricKey* DecryptContext::GetKey() const {
-  return NULL;
+VideoPipelineDevice::VideoPipelineDevice() {
+}
+
+VideoPipelineDevice::~VideoPipelineDevice() {
 }
 
 }  // namespace media