Add expansion of shorthands with custom properties to longhands using a pending substition value.

third_party/WebKit/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 68 matching lines @@
 void StyleResolverState::setCustomPropertySetForApplyAtRule(const String& string, StylePropertySet* customPropertySet)
 {
     m_customPropertySetsForApplyAtRule.set(string, customPropertySet);
 }
 
 StylePropertySet* StyleResolverState::customPropertySetForApplyAtRule(const String& string)
 {
     return m_customPropertySetsForApplyAtRule.get(string);
 }
 
+void StyleResolverState::setCssValueForLonghandPropertyId(CSSPropertyID longhandPropertyId, const CSSValue* cssValue)
+{
+    m_parsedLonghandCssValueForVariableResolver.set(longhandPropertyId, cssValue);
+}
+
+const CSSValue* StyleResolverState::cssValueForLonghandPropertyId(CSSPropertyID longhandPropertyId)
+{
+    return m_parsedLonghandCssValueForVariableResolver.get(longhandPropertyId);
+}
+
 } // namespace blink