Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 516 matching lines @@
   panel_->MakeOpaque();
 }
 
 void MediaControlsImpl::MakeTransparent() {
   panel_->MakeTransparent();
 }
 
 bool MediaControlsImpl::ShouldHideMediaControls(unsigned behavior_flags) const {
   // Never hide for a media element without visual representation.
   if (!MediaElement().IsHTMLVideoElement() || !MediaElement().HasVideo() ||
-      MediaElement().IsPlayingRemotely()) {
+      MediaElement().IsPlayingRemotely() ||
+      toHTMLVideoElement(MediaElement()).GetMediaRemotingStatus() ==
+          HTMLVideoElement::MediaRemotingStatus::Started) {
     return false;
   }
 
   // Keep the controls visible as long as the timer is running.
   const bool ignore_wait_for_timer = behavior_flags & kIgnoreWaitForTimer;
   if (!ignore_wait_for_timer && keep_showing_until_timer_fires_)
     return false;
 
   // Don't hide if the mouse is over the controls.
   const bool ignore_controls_hover = behavior_flags & kIgnoreControlsHover;
@@ skipping 591 matching lines @@
   visitor->Trace(cast_button_);
   visitor->Trace(overlay_cast_button_);
   visitor->Trace(media_event_listener_);
   visitor->Trace(window_event_listener_);
   visitor->Trace(orientation_lock_delegate_);
   MediaControls::Trace(visitor);
   HTMLDivElement::Trace(visitor);
 }
 
 }  // namespace blink