Only show overlay play button when controls are enabled.

Source/core/html/shadow/MediaControls.cpp

Index: Source/core/html/shadow/MediaControls.cpp
diff --git a/Source/core/html/shadow/MediaControls.cpp b/Source/core/html/shadow/MediaControls.cpp
index 7b12c742023a5db0ac26e358ca0405bc481ed7be..ca17d00f3ffa979a749a500801c230392ceffd35 100644
--- a/Source/core/html/shadow/MediaControls.cpp
+++ b/Source/core/html/shadow/MediaControls.cpp
@@ -191,6 +191,8 @@ void MediaControls::show()
     makeOpaque();
     m_panel->setIsDisplayed(true);
     m_panel->show();
+    if (m_overlayPlayButton)
+        m_overlayPlayButton->updateDisplayType();
 }
 
 void MediaControls::mediaElementFocused()
@@ -203,6 +205,8 @@ void MediaControls::hide()
 {
     m_panel->setIsDisplayed(false);
     m_panel->hide();
+    if (m_overlayPlayButton)
+        m_overlayPlayButton->hide();
 }
 
 void MediaControls::makeOpaque()