Bug Fix: Rendering stuck due to thread issue of WebMediaPlayerMSCompositor (M51)

content/renderer/media/webmediaplayer_ms_compositor.cc

Index: content/renderer/media/webmediaplayer_ms_compositor.cc
diff --git a/content/renderer/media/webmediaplayer_ms_compositor.cc b/content/renderer/media/webmediaplayer_ms_compositor.cc
index 36613d9cf22c98554435869434bad44965b6b88b..27e756246eb46fe2a1882be127e0673303fa98c2 100644
--- a/content/renderer/media/webmediaplayer_ms_compositor.cc
+++ b/content/renderer/media/webmediaplayer_ms_compositor.cc
@@ -290,13 +290,19 @@ bool WebMediaPlayerMSCompositor::HasCurrentFrame() {
 scoped_refptr<media::VideoFrame> WebMediaPlayerMSCompositor::GetCurrentFrame() {
   DVLOG(3) << __FUNCTION__;
   base::AutoLock auto_lock(current_frame_lock_);
+  current_frame_used_by_compositor_ = true;
   return current_frame_;
 }
 
 void WebMediaPlayerMSCompositor::PutCurrentFrame() {
   DVLOG(3) << __FUNCTION__;
+}
+
+scoped_refptr<media::VideoFrame>
+WebMediaPlayerMSCompositor::GetCurrentFrameWithoutUpdatingStatistics() {
+  DVLOG(3) << __FUNCTION__;
   base::AutoLock auto_lock(current_frame_lock_);
-  current_frame_used_by_compositor_ = true;
+  return current_frame_;
 }
 
 void WebMediaPlayerMSCompositor::StartRendering() {