Implement FullScreen using top layer.

Source/core/dom/LayoutTreeBuilder.cpp

Index: Source/core/dom/LayoutTreeBuilder.cpp
diff --git a/Source/core/dom/LayoutTreeBuilder.cpp b/Source/core/dom/LayoutTreeBuilder.cpp
index bbd8b190102dee95fe5b8dca49eb9a134da2b8bc..09ebf6ddf19748ae088b7a73c7a7630213fe9b7f 100644
--- a/Source/core/dom/LayoutTreeBuilder.cpp
+++ b/Source/core/dom/LayoutTreeBuilder.cpp
@@ -35,7 +35,6 @@
 #include "core/dom/PseudoElement.h"
 #include "core/dom/Text.h"
 #include "core/dom/shadow/InsertionPoint.h"
-#include "core/layout/LayoutFullScreen.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutText.h"
 #include "core/layout/LayoutView.h"
@@ -136,12 +135,6 @@ void LayoutTreeBuilderForElement::createLayoutObject()
     m_node->setLayoutObject(newLayoutObject);
     newLayoutObject->setStyle(&style); // setStyle() can depend on layoutObject() already being set.
 
-    if (Fullscreen::isActiveFullScreenElement(*m_node)) {
-        newLayoutObject = LayoutFullScreen::wrapLayoutObject(newLayoutObject, parentLayoutObject, &m_node->document());
-        if (!newLayoutObject)
-            return;
-    }
-
     // Note: Adding newLayoutObject instead of layoutObject(). layoutObject() may be a child of newLayoutObject.
     parentLayoutObject->addChild(newLayoutObject, nextLayoutObject);
 }