Support display: contents for elements, first-line and first-letter pseudos.

third_party/WebKit/Source/core/css/resolver/ElementResolveContext.h

 /*
  * 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.
  *
@@ skipping 27 matching lines @@
 class CORE_EXPORT ElementResolveContext {
   STACK_ALLOCATED();
 
  public:
   explicit ElementResolveContext(const Document&);
 
   explicit ElementResolveContext(Element&);
 
   Element* element() const { return m_element; }
   const ContainerNode* parentNode() const { return m_parentNode; }
+  const ContainerNode* layoutParent() const { return m_layoutParent; }
   const ComputedStyle* rootElementStyle() const { return m_rootElementStyle; }
   const ComputedStyle* parentStyle() const {
     return parentNode() ? parentNode()->computedStyle() : nullptr;
   }
+  const ComputedStyle* layoutParentStyle() const {
+    return layoutParent() ? layoutParent()->computedStyle() : nullptr;
+  }
   EInsideLink elementLinkState() const { return m_elementLinkState; }
   bool distributedToInsertionPoint() const {
     return m_distributedToInsertionPoint;
   }
 
  private:
   Member<Element> m_element;
   Member<ContainerNode> m_parentNode;
+  Member<ContainerNode> m_layoutParent;
   const ComputedStyle* m_rootElementStyle;
   EInsideLink m_elementLinkState;
   bool m_distributedToInsertionPoint;
 };
 
 }  // namespace blink
 
 #endif  // ElementResolveContext_h