Only show overlay play button when controls are enabled.

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 173 matching lines @@
         m_fullScreenButton->hide();
 
     makeOpaque();
 }
 
 void MediaControls::show()
 {
     makeOpaque();
     m_panel->setIsDisplayed(true);
     m_panel->show();
+    if (m_overlayPlayButton)
+        m_overlayPlayButton->updateDisplayType();
 }
 
 void MediaControls::mediaElementFocused()
 {
     show();
     stopHideMediaControlsTimer();
 }
 
 void MediaControls::hide()
 {
     m_panel->setIsDisplayed(false);
     m_panel->hide();
+    if (m_overlayPlayButton)
+        m_overlayPlayButton->hide();
 }
 
 void MediaControls::makeOpaque()
 {
     m_panel->makeOpaque();
 }
 
 void MediaControls::makeTransparent()
 {
     m_panel->makeTransparent();
@@ skipping 256 matching lines @@
     visitor->trace(m_muteButton);
     visitor->trace(m_volumeSlider);
     visitor->trace(m_toggleClosedCaptionsButton);
     visitor->trace(m_fullScreenButton);
     visitor->trace(m_durationDisplay);
     visitor->trace(m_enclosure);
     HTMLDivElement::trace(visitor);
 }
 
 }