[chromecast] Start deprecating MediaMessageLoop.

chromecast/browser/cast_content_browser_client.h

 // 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.
 
 #ifndef CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 #define CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 141 matching lines @@
       std::vector<std::string>* additional_schemes) override;
 #if defined(OS_ANDROID) && defined(VIDEO_HOLE)
   content::ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(
       content::WebContents* web_contents) override;
 #endif  // defined(OS_ANDROID) && defined(VIDEO_HOLE)
 
  protected:
   CastContentBrowserClient();
 
+  // Returns the task runner that must be used for media IO.
+  // TODO(alokp): We might need to make it public as we convert more callsites
+  // using MediaMessageLoop directly.
+  scoped_refptr<base::SingleThreadTaskRunner> GetMediaTaskRunner();
+
 #if !defined(OS_ANDROID)
   virtual scoped_refptr<media::CmaMediaPipelineClient>
   CreateCmaMediaPipelineClient();
 #endif  // !defined(OS_ANDROID)
 
   URLRequestContextFactory* url_request_context_factory() const {
     return url_request_context_factory_.get();
   }
 
  private:
@@ skipping 21 matching lines @@
 
   scoped_ptr<URLRequestContextFactory> url_request_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentBrowserClient);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_