Remove StyleResolverState::styledElement() since we can just check isHTMLElement() or isSVGElement()

Source/core/css/resolver/StyleResolverState.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 15 matching lines @@
 #include "core/dom/Node.h"
 #include "core/dom/NodeRenderStyle.h"
 #include "core/dom/NodeRenderingContext.h"
 #include "core/dom/VisitedLinkState.h"
 #include "core/page/Page.h"
 
 namespace WebCore {
 
 ElementResolveContext::ElementResolveContext(Element* element)
     : m_element(element)
-    , m_styledElement(element && element->isStyledElement() ? element : 0)
     , m_elementLinkState(element ? element->document()->visitedLinkState()->determineLinkState(element) : NotInsideLink)
     , m_distributedToInsertionPoint(false)
     , m_resetStyleInheritance(false)
 {
     NodeRenderingContext context(element);
     m_parentNode = context.parentNodeForRenderingAndStyle();
     m_distributedToInsertionPoint = context.insertionPoint();
     m_resetStyleInheritance = context.resetStyleInheritance();
 
     Node* documentElement = document()->documentElement();
@@ skipping 43 matching lines @@
     m_fontDirty = false;
 
     // FIXME: StyleResolverState is never passed between documents
     // so we should be able to do this initialization at StyleResolverState
     // createion time instead of now, correct?
     if (Page* page = newDocument->page())
         m_elementStyleResources.setDeviceScaleFactor(page->deviceScaleFactor());
 }
 
 } // namespace WebCore