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

Source/core/html/HTMLVideoElement.cpp

Index: Source/core/html/HTMLVideoElement.cpp
diff --git a/Source/core/html/HTMLVideoElement.cpp b/Source/core/html/HTMLVideoElement.cpp
index ee23553a4c9e500c63f12224ca042cba5c80a069..fdcffcb5153736e64b192e09c13331cfc1995cf0 100644
--- a/Source/core/html/HTMLVideoElement.cpp
+++ b/Source/core/html/HTMLVideoElement.cpp
@@ -32,7 +32,6 @@
 #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"
@@ -244,13 +243,13 @@ void HTMLVideoElement::webkitEnterFullscreen(ExceptionState& exceptionState)
         return;
     }
 
-    Fullscreen::from(document()).requestFullscreen(*this, Fullscreen::PrefixedRequest);
+    enterFullscreen();
 }
 
 void HTMLVideoElement::webkitExitFullscreen()
 {
     if (isFullscreen())
-        Fullscreen::from(document()).exitFullscreen();
+        exitFullscreen();
 }
 
 bool HTMLVideoElement::webkitSupportsFullscreen()