Delete browser MSE implementation.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 6c6bfc1d9cf84d3646a20fd2af193d7f12fa8c03..b77e5122c0462e087201af6b4fb7b9121f429123 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -170,7 +170,6 @@
 #include <cpu-features.h>
 #include "content/renderer/android/synchronous_compositor_filter.h"
 #include "content/renderer/android/synchronous_compositor_frame_sink.h"
-#include "content/renderer/media/android/renderer_demuxer_android.h"
 #include "content/renderer/media/android/stream_texture_factory.h"
 #include "media/base/android/media_codec_util.h"
 #endif
@@ -2151,11 +2150,6 @@ RenderThreadImpl::GetMediaThreadTaskRunner() {
   if (!media_thread_) {
     media_thread_.reset(new base::Thread("Media"));
     media_thread_->Start();
-
-#if defined(OS_ANDROID)
-    renderer_demuxer_ = new RendererDemuxerAndroid();
-    AddFilter(renderer_demuxer_.get());
-#endif
   }
   return media_thread_->task_runner();
 }