Delete browser MSE implementation.

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index aac8afa60c469e67337e8ded3fe2a9e2d5abfcf8..ec0e80d24a67a00002dec3f70ced9bf179a4cded 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -60,7 +60,6 @@ namespace content {
 class AudioInputRendererHost;
 class AudioRendererHost;
 class BrowserCdmManager;
-class BrowserDemuxerAndroid;
 class InProcessChildThreadParams;
 class MessagePortMessageFilter;
 class MojoChildConnection;
@@ -264,12 +263,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // from shutting down: crbug.com/608049
   static void CheckAllWorkersTerminated();
 
-#if defined(OS_ANDROID)
-  const scoped_refptr<BrowserDemuxerAndroid>& browser_demuxer_android() {
-    return browser_demuxer_android_;
-  }
-#endif
-
   RenderFrameMessageFilter* render_frame_message_filter_for_testing() const {
     return render_frame_message_filter_.get();
   }
@@ -552,10 +545,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
 
   scoped_refptr<AudioInputRendererHost> audio_input_renderer_host_;
 
-#if defined(OS_ANDROID)
-  scoped_refptr<BrowserDemuxerAndroid> browser_demuxer_android_;
-#endif
-
 #if defined(ENABLE_WEBRTC)
   scoped_refptr<P2PSocketDispatcherHost> p2p_socket_dispatcher_host_;