Reland "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 240 matching lines @@
     while (beforeDescendantContainer->parent() != this)
         beforeDescendantContainer = beforeDescendantContainer->parent();
     ASSERT(beforeDescendantContainer);
 
     // We really can't go on if what we have found isn't anonymous. We're not supposed to use some
     // random non-anonymous object and put the child there. That's a recipe for security issues.
     RELEASE_ASSERT(beforeDescendantContainer->isAnonymous());
 
     // If the requested insertion point is not one of our children, then this is because
     // there is an anonymous container within this object that contains the beforeDescendant.
-    if (beforeDescendantContainer->isAnonymousBlock()
-        // Full screen layoutObjects and full screen placeholders act as anonymous blocks, not tables:
-        || beforeDescendantContainer->isLayoutFullScreen()
-        || beforeDescendantContainer->isLayoutFullScreenPlaceholder()) {
+    if (beforeDescendantContainer->isAnonymousBlock()) {
         // Insert the child into the anonymous block box instead of here.
         if (newChild->isInline() || newChild->isFloatingOrOutOfFlowPositioned() || beforeDescendant->parent()->slowFirstChild() != beforeDescendant)
             beforeDescendant->parent()->addChild(newChild, beforeDescendant);
         else
             addChild(newChild, beforeDescendant->parent());
         return;
     }
 
     ASSERT(beforeDescendantContainer->isTable());
     if (newChild->isTablePart()) {
@@ skipping 1591 matching lines @@
         for (TrackedLayoutBoxListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             LayoutBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
 #endif
 
 } // namespace blink