[chromecast] Fix build with enable_mojo_media=true.

chromecast/browser/media/cast_renderer.h

Index: chromecast/browser/media/cast_renderer.h
diff --git a/chromecast/browser/media/cast_renderer.h b/chromecast/browser/media/cast_renderer.h
index 01872dc0e11e10746760f08582b047cb7b1c73b3..ed89de5a382930b468a032fdee4ece4faddaa040 100644
--- a/chromecast/browser/media/cast_renderer.h
+++ b/chromecast/browser/media/cast_renderer.h
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "chromecast/browser/media/media_pipeline_backend_factory.h"
 #include "media/base/renderer.h"
 
 namespace base {
@@ -17,12 +18,11 @@ class TaskRunnerImpl;
 
 namespace media {
 class BalancedMediaTaskRunnerFactory;
-class CmaMediaPipelineClient;
 class MediaPipelineImpl;
 
 class CastRenderer : public ::media::Renderer {
  public:
-  CastRenderer(const scoped_refptr<CmaMediaPipelineClient> pipeline_client,
+  CastRenderer(const CreateMediaPipelineBackendCB& create_backend_cb,
                const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
   ~CastRenderer() final;
 
@@ -48,7 +48,7 @@ class CastRenderer : public ::media::Renderer {
   enum Stream { STREAM_AUDIO, STREAM_VIDEO };
   void OnEos(Stream stream);
 
-  scoped_refptr<CmaMediaPipelineClient> pipeline_client_;
+  const CreateMediaPipelineBackendCB create_backend_cb_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   scoped_refptr<BalancedMediaTaskRunnerFactory> media_task_runner_factory_;
   scoped_ptr<TaskRunnerImpl> backend_task_runner_;