Revert of Remove the allowfullscreen exemption for the video-specific fullscreen API

Source/core/html/HTMLVideoElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #include "config.h"
 #include "core/html/HTMLVideoElement.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/CSSPropertyNames.h"
 #include "core/HTMLNames.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
-#include "core/dom/Fullscreen.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLImageLoader.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/layout/LayoutImage.h"
 #include "core/layout/LayoutVideo.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
@@ skipping 191 matching lines @@
 void HTMLVideoElement::webkitEnterFullscreen(ExceptionState& exceptionState)
 {
     if (isFullscreen())
         return;
 
     if (!supportsFullscreen()) {
         exceptionState.throwDOMException(InvalidStateError, "This element does not support fullscreen mode.");
         return;
     }
 
-    Fullscreen::from(document()).requestFullscreen(*this, Fullscreen::PrefixedRequest);
+    enterFullscreen();
 }
 
 void HTMLVideoElement::webkitExitFullscreen()
 {
     if (isFullscreen())
-        Fullscreen::from(document()).exitFullscreen();
+        exitFullscreen();
 }
 
 bool HTMLVideoElement::webkitSupportsFullscreen()
 {
     return supportsFullscreen();
 }
 
 bool HTMLVideoElement::webkitDisplayingFullscreen()
 {
     return isFullscreen();
@@ skipping 59 matching lines @@
 {
     return !isMediaDataCORSSameOrigin(destinationSecurityOrigin);
 }
 
 FloatSize HTMLVideoElement::elementSize() const
 {
     return FloatSize(videoWidth(), videoHeight());
 }
 
 } // namespace blink