Preliminary change for new rtc rendering algorithm

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index f5d90c62c10cfa3267f72f938a5122b6eb5c275a..a856f876857c3b284297c9c833c39a38318c2ab7 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4735,9 +4735,14 @@ WebMediaPlayer* RenderFrameImpl::CreateWebMediaPlayerForMediaStream(
       (android_getCpuFeatures() & ANDROID_CPU_ARM_FEATURE_NEON) != 0;
   UMA_HISTOGRAM_BOOLEAN("Platform.WebRtcNEONFound", found_neon);
 #endif  // defined(OS_ANDROID) && defined(ARCH_CPU_ARMEL)
-  return new WebMediaPlayerMS(frame_, client, weak_factory_.GetWeakPtr(),
-                              new RenderMediaLog(),
-                              CreateRendererFactory());
+  scoped_refptr<base::SingleThreadTaskRunner>  compositor_task_runner =
+      RenderThreadImpl::current()->compositor_task_runner();
+  if (!compositor_task_runner.get())
+    compositor_task_runner = base::MessageLoop::current()->task_runner();
+  return new WebMediaPlayerMS(
+      frame_, client, weak_factory_.GetWeakPtr(), new RenderMediaLog(),
+      CreateRendererFactory(),
+      compositor_task_runner);
 #else
   return NULL;
 #endif  // defined(ENABLE_WEBRTC)