Simplify MediaControls::show() and hide()

Source/core/html/shadow/MediaControls.cpp

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
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  * modification, are permitted provided that the following conditions
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  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 #include "config.h"
 #include "core/html/shadow/MediaControls.h"
 
+#include "HTMLNames.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/events/MouseEvent.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/MediaController.h"
 #include "core/rendering/RenderTheme.h"
 
 namespace WebCore {
 
 #if OS(ANDROID)
 static const bool alwaysHideFullscreenControls = true;
@@ skipping 154 matching lines @@
     if (mediaControllerInterface().hasVideo())
         m_fullScreenButton->show();
     else
         m_fullScreenButton->hide();
 
     makeOpaque();
 }
 
 void MediaControls::show()
 {
+    setBooleanAttribute(HTMLNames::hiddenAttr, false);
     makeOpaque();
-    m_panel->setIsDisplayed(true);
-    m_panel->show();
 }
 
 void MediaControls::hide()
 {
-    m_panel->setIsDisplayed(false);
-    m_panel->hide();
+    setBooleanAttribute(HTMLNames::hiddenAttr, true);
 }
 
 void MediaControls::makeOpaque()
 {
     m_panel->makeOpaque();
 }
 
 void MediaControls::makeTransparent()
 {
     m_panel->makeTransparent();
@@ skipping 215 matching lines @@
 
 void MediaControls::updateTextTrackDisplay()
 {
     if (!m_textDisplayContainer)
         createTextTrackDisplay();
 
     m_textDisplayContainer->updateDisplay();
 }
 
 }