Implement FullScreen using top layer.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 405 matching lines @@
     if (beforeChild && beforeChild->parent() != this) {
         LayoutObject* beforeChildContainer = beforeChild->parent();
         while (beforeChildContainer->parent() != this)
             beforeChildContainer = beforeChildContainer->parent();
         ASSERT(beforeChildContainer);
 
         if (beforeChildContainer->isAnonymous()) {
             // If the requested beforeChild is not one of our children, then this is because
             // there is an anonymous container within this object that contains the beforeChild.
             LayoutObject* beforeChildAnonymousContainer = beforeChildContainer;
-            if (beforeChildAnonymousContainer->isAnonymousBlock()
-                // Full screen layoutObjects and full screen placeholders act as anonymous blocks, not tables:
-                || beforeChildAnonymousContainer->isLayoutFullScreen()
-                || beforeChildAnonymousContainer->isLayoutFullScreenPlaceholder()
-                ) {
+            if (beforeChildAnonymousContainer->isAnonymousBlock()) {
                 // Insert the child into the anonymous block box instead of here.
                 if (newChild->isInline() || newChild->isFloatingOrOutOfFlowPositioned() || beforeChild->parent()->slowFirstChild() != beforeChild)
                     beforeChild->parent()->addChild(newChild, beforeChild);
                 else
                     addChild(newChild, beforeChild->parent());
                 return;
             }
 
             ASSERT(beforeChildAnonymousContainer->isTable());
             if (newChild->isTablePart()) {
@@ skipping 2501 matching lines @@
 void LayoutBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const LayoutObject* obj) const
 {
     showLayoutObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace blink