Store features in the ScopedStyleResoolver.

sky/engine/core/css/resolver/SharedStyleFinder.h

 /*
  * Copyright (C) 2013 Google, Inc.
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef SKY_ENGINE_CORE_CSS_RESOLVER_SHAREDSTYLEFINDER_H_
 #define SKY_ENGINE_CORE_CSS_RESOLVER_SHAREDSTYLEFINDER_H_
 
 #include "sky/engine/core/css/resolver/ElementResolveContext.h"
 #include "sky/engine/core/dom/Element.h"
 
 namespace blink {
 
+class ContainerNode;
 class Element;
-class Node;
 class RenderStyle;
-class RuleFeatureSet;
-class RuleSet;
-class SpaceSplitString;
 class StyleResolver;
 
 class SharedStyleFinder {
     STACK_ALLOCATED();
 public:
     // RuleSets are passed non-const as the act of matching against them can cause them
     // to be compacted. :(
-    SharedStyleFinder(const ElementResolveContext& context,
-        const RuleFeatureSet& features, StyleResolver& styleResolver)
+    SharedStyleFinder(const ElementResolveContext& context, StyleResolver& styleResolver)
         : m_elementAffectedByClassRules(false)
-        , m_features(features)
         , m_styleResolver(styleResolver)
         , m_context(context)
         , m_renderingParent(nullptr)
     { }
 
     RenderStyle* findSharedStyle();
 
 private:
     Element* findElementForStyleSharing() const;
 
     // Only used when we're collecting stats on styles.
     bool documentContainsValidCandidate() const;
 
     bool classNamesAffectedByRules(const Element&) const;
     bool attributesAffectedByRules(const Element&) const;
 
     bool canShareStyleWithElement(Element& candidate) const;
     bool sharingCandidateHasIdenticalStyleAffectingAttributes(Element& candidate) const;
     bool sharingCandidateCanShareHostStyles(Element& candidate) const;
     bool sharingCandidateDistributedToSameInsertionPoint(Element& candidate) const;
 
     Element& element() const { return *m_context.element(); }
     Document& document() const { return element().document(); }
 
     bool m_elementAffectedByClassRules;
-    const RuleFeatureSet& m_features;
     StyleResolver& m_styleResolver;
     const ElementResolveContext& m_context;
     ContainerNode* m_renderingParent;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_CSS_RESOLVER_SHAREDSTYLEFINDER_H_