Forward declare StyleVariableData in StyleRareInheritedData instead of including it

third_party/WebKit/Source/core/style/StyleRareInheritedData.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 11 matching lines @@
 #include "core/style/StyleRareInheritedData.h"
 
 #include "core/style/AppliedTextDecoration.h"
 #include "core/style/CursorData.h"
 #include "core/style/DataEquivalency.h"
 #include "core/style/ComputedStyle.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "core/style/QuotesData.h"
 #include "core/style/ShadowList.h"
 #include "core/style/StyleImage.h"
+#include "core/style/StyleVariableData.h"
 
 namespace blink {
 
 struct SameSizeAsStyleRareInheritedData : public RefCounted<SameSizeAsStyleRareInheritedData> {
     void* styleImage;
     Color firstColor;
     float firstFloat;
     Color colors[5];
     void* ownPtrs[1];
     AtomicString atomicStrings[3];
@@ skipping 187 matching lines @@
 {
     return dataEquivalent(textShadow.get(), o.textShadow.get());
 }
 
 bool StyleRareInheritedData::quotesDataEquivalent(const StyleRareInheritedData& o) const
 {
     return dataEquivalent(quotes, o.quotes);
 }
 
 } // namespace blink