Remove support for anonymous deprecated flexboxes.

Source/core/rendering/RenderDeprecatedFlexibleBox.cpp

 /*
  * This file is part of the render object implementation for KHTML.
  *
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003 Apple Computer, Inc.
  *
  * 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 101 matching lines @@
     RenderDeprecatedFlexibleBox* m_box;
     RenderBox* m_currentChild;
     bool m_forward;
     unsigned int m_currentOrdinal;
     unsigned int m_largestOrdinal;
     HashSet<unsigned int> m_ordinalValues;
     Vector<unsigned int> m_sortedOrdinalValues;
     int m_ordinalIteration;
 };
 
-RenderDeprecatedFlexibleBox::RenderDeprecatedFlexibleBox(Element* element)
-    : RenderBlock(element)
+RenderDeprecatedFlexibleBox::RenderDeprecatedFlexibleBox(Element& element)
+    : RenderBlock(&element)
 {
     ASSERT(!childrenInline());
     m_stretchingChildren = false;
     if (!isAnonymous()) {
         const KURL& url = document().url();
         if (url.protocolIs("chrome"))
             UseCounter::count(document(), UseCounter::DeprecatedFlexboxChrome);
         else if (url.protocolIs("chrome-extension"))
             UseCounter::count(document(), UseCounter::DeprecatedFlexboxChromeExtension);
         else
             UseCounter::count(document(), UseCounter::DeprecatedFlexboxWebContent);
     }
 }
 
 RenderDeprecatedFlexibleBox::~RenderDeprecatedFlexibleBox()
 {
 }
 
-RenderDeprecatedFlexibleBox* RenderDeprecatedFlexibleBox::createAnonymous(Document* document)
-{
-    RenderDeprecatedFlexibleBox* renderer = new RenderDeprecatedFlexibleBox(0);
-    renderer->setDocumentForAnonymous(document);
-    return renderer;
-}
-
 static LayoutUnit marginWidthForChild(RenderBox* child)
 {
     // A margin basically has three types: fixed, percentage, and auto (variable).
     // Auto and percentage margins simply become 0 when computing min/max width.
     // Fixed margins can be added in as is.
     Length marginLeft = child->style()->marginLeft();
     Length marginRight = child->style()->marginRight();
     LayoutUnit margin = 0;
     if (marginLeft.isFixed())
         margin += marginLeft.value();
@@ skipping 910 matching lines @@
     if (isPseudoElement())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isAnonymous())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isRelPositioned())
         return "RenderDeprecatedFlexibleBox (relative positioned)";
     return "RenderDeprecatedFlexibleBox";
 }
 
 } // namespace blink