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 53 matching lines @@
   if (!mediaElement.hasVideo())
     return false;
 
   if (!Fullscreen::fullscreenEnabled(mediaElement.document()))
     return false;
 
   return true;
 }
 
 static bool shouldShowCastButton(HTMLMediaElement& mediaElement) {
-  return !mediaElement.fastHasAttribute(HTMLNames::disableremoteplaybackAttr) &&
-         mediaElement.hasRemoteRoutes();
+  if (mediaElement.fastHasAttribute(HTMLNames::disableremoteplaybackAttr))
+    return false;
+
+  // Explicitly do not show cast button when the mediaControlsEnabled setting is
+  // false to make sure the overlay does not appear.
+  Document& document = mediaElement.document();
+  if (document.settings() && !document.settings()->getMediaControlsEnabled())
+    return false;
+
+  return mediaElement.hasRemoteRoutes();
 }
 
 static bool preferHiddenVolumeControls(const Document& document) {
   return !document.settings() ||
          document.settings()->getPreferHiddenVolumeControls();
 }
 
 class MediaControls::BatchedControlUpdate {
   WTF_MAKE_NONCOPYABLE(BatchedControlUpdate);
   STACK_ALLOCATED();
@@ skipping 885 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