Don't show media controls when there is a persistent video.

third_party/WebKit/Source/core/html/shadow/MediaControls.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 514 matching lines @@
   if (!mediaElement().shouldShowControls() && !mediaElement().autoplay() &&
       mediaElement().paused()) {
     // Note that this is a case where we add the overlay cast button
     // without wanting the panel cast button.  We depend on the fact
     // that computeWhichControlsFit() won't change overlay cast button
     // visibility in the case where the cast button isn't wanted.
     // We don't call compute...() here, but it will be called as
     // non-cast changes (e.g., resize) occur.  If the panel button
     // is shown, however, compute...() will take control of the
     // overlay cast button if it needs to hide it from the panel.
-    m_overlayCastButton->tryShowOverlay();
+    if (!document().settings() ||
+        !document().settings()->getMediaControlsEnabled()) {
+      m_overlayCastButton->tryShowOverlay();
+    }
     m_castButton->setIsWanted(false);
   } else if (mediaElement().shouldShowControls()) {
     m_overlayCastButton->setIsWanted(false);
     m_castButton->setIsWanted(true);
   }
 }
 
 void MediaControls::showOverlayCastButtonIfNeeded() {
   if (mediaElement().shouldShowControls() ||
       !shouldShowCastButton(mediaElement()))
@@ skipping 426 matching lines @@
   visitor->trace(m_overflowList);
   visitor->trace(m_castButton);
   visitor->trace(m_overlayCastButton);
   visitor->trace(m_mediaEventListener);
   visitor->trace(m_windowEventListener);
   visitor->trace(m_orientationLockDelegate);
   HTMLDivElement::trace(visitor);
 }
 
 }  // namespace blink