[chromecast] Start deprecating MediaMessageLoop.

chromecast/browser/media/cma_message_filter_host.h

Index: chromecast/browser/media/cma_message_filter_host.h
diff --git a/chromecast/browser/media/cma_message_filter_host.h b/chromecast/browser/media/cma_message_filter_host.h
index 0a19fc2947ae7d7bd4957aea9881f1d29ec4d9c2..a9aeb16f7877d87e96ac21c6416f304fd08a0da5 100644
--- a/chromecast/browser/media/cma_message_filter_host.h
+++ b/chromecast/browser/media/cma_message_filter_host.h
@@ -38,6 +38,7 @@ class VideoDecoderConfig;
 namespace chromecast {
 namespace media {
 
+class BrowserCdmCast;
 class MediaPipelineBackend;
 struct MediaPipelineDeviceParams;
 class MediaPipelineHost;
@@ -50,8 +51,10 @@ class CmaMessageFilterHost
   typedef base::Callback<scoped_ptr<MediaPipelineBackend>(
       const MediaPipelineDeviceParams&)> CreateBackendCB;
 
-  CmaMessageFilterHost(int render_process_id,
-                       scoped_refptr<CmaMediaPipelineClient> client);
+  CmaMessageFilterHost(
+      int render_process_id,
+      scoped_refptr<CmaMediaPipelineClient> client,
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
 
   // content::BrowserMessageFilter implementation:
   void OnChannelClosing() override;
@@ -113,6 +116,22 @@ class CmaMessageFilterHost
                             TrackId track_id,
                             const gfx::Size& size);
 
+  // CDM functions.
+  void SetCdmOnUiThread(int render_process_id,
+                        int render_frame_id,
+                        int media_id,
+                        int cdm_id);
+  void SetCdmOnCmaThread(int render_process_id,
+                         int media_id,
+                         BrowserCdmCast* cdm);
+  // Media pipeline map management functions.
+  // These functions are called on CMA thread.
+  MediaPipelineHost* GetMediaPipeline(int process_id, int media_id);
+  void SetMediaPipeline(int process_id, int media_id, MediaPipelineHost* host);
+  void DestroyMediaPipeline(int process_id,
+                            int media_id,
+                            scoped_ptr<MediaPipelineHost> media_pipeline);
+
   // Render process ID correponding to this message filter.
   const int process_id_;