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

third_party/WebKit/Source/web/WebSettingsImpl.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 701 matching lines @@
 
 void WebSettingsImpl::setExpensiveBackgroundThrottlingMaxBudget(
     float maxBudget) {
   m_expensiveBackgroundThrottlingMaxBudget = maxBudget;
 }
 
 void WebSettingsImpl::setExpensiveBackgroundThrottlingMaxDelay(float maxDelay) {
   m_expensiveBackgroundThrottlingMaxDelay = maxDelay;
 }
 
+void WebSettingsImpl::setMediaControlsEnabled(bool enabled) {
+  m_settings->setMediaControlsEnabled(enabled);
+}
+
 }  // namespace blink