Get rid of Reset and ResetStyleResolverAndFontSelector.

Source/core/dom/StyleSheetCollection.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 39 matching lines @@
 class StyleSheetList;
 
 // FIXME: Should be in separate file and be renamed like:
 // - StyleSheetCollectionBase -> StyleSheetCollection
 // - StyleSheetCollection -> ScopeStyleSheetCollection
 //
 class StyleSheetCollectionBase {
     WTF_MAKE_NONCOPYABLE(StyleSheetCollectionBase); WTF_MAKE_FAST_ALLOCATED;
 public:
     StyleSheetCollectionBase();
-    ~StyleSheetCollectionBase();
+    virtual ~StyleSheetCollectionBase();
 
     Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() { return m_activeAuthorStyleSheets; }
     Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() { return m_styleSheetsForStyleSheetList; }
     const Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() const { return m_activeAuthorStyleSheets; }
     const Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() const { return m_styleSheetsForStyleSheetList; }
 
     void swap(StyleSheetCollectionBase&);
     void appendActiveStyleSheets(const Vector<RefPtr<CSSStyleSheet> >&);
     void appendActiveStyleSheet(CSSStyleSheet*);
     void appendSheetForList(StyleSheet*);
 
 protected:
     Vector<RefPtr<StyleSheet> > m_styleSheetsForStyleSheetList;
     Vector<RefPtr<CSSStyleSheet> > m_activeAuthorStyleSheets;
 };
 
 
 class StyleSheetCollection : public StyleSheetCollectionBase {
 public:
+    bool updateActiveStyleSheets(StyleEngine*, StyleResolverUpdateMode);
+
     void addStyleSheetCandidateNode(Node*, bool createdByParser);
     void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode);
     bool hasStyleSheetCandidateNodes() const { return !m_styleSheetCandidateNodes.isEmpty(); }
 
 
     bool usesRemUnits() const { return m_usesRemUnits; }
 
     DocumentOrderedList& styleSheetCandidateNodes() { return m_styleSheetCandidateNodes; }
     DocumentOrderedList* scopingNodesForStyleScoped() { return m_scopingNodesForStyleScoped.scopingNodes(); }
     ListHashSet<Node*, 4>* scopingNodesRemoved() { return m_scopingNodesForStyleScoped.scopingNodesRemoved(); }
 
     void clearMediaQueryRuleSetStyleSheets();
 
 protected:
     explicit StyleSheetCollection(TreeScope&);
 
     Document* document() { return m_treeScope.documentScope(); }
 
     enum StyleResolverUpdateType {
         Reconstruct,
-        Reset,
         Additive,
-        ResetStyleResolverAndFontSelector
     };
 
     struct StyleSheetChange {
         StyleResolverUpdateType styleResolverUpdateType;
         bool requiresFullStyleRecalc;
 
         StyleSheetChange()
             : styleResolverUpdateType(Reconstruct)
             , requiresFullStyleRecalc(true) { }
     };
 
     void analyzeStyleSheetChange(StyleResolverUpdateMode, const StyleSheetCollectionBase&, StyleSheetChange&);
-    void resetAllRuleSetsInTreeScope(StyleResolver*);
     void updateUsesRemUnits();
 
+    virtual void collectStyleSheets(StyleEngine*, StyleSheetCollectionBase&) = 0;
+
 private:
     static StyleResolverUpdateType compareStyleSheets(const Vector<RefPtr<CSSStyleSheet> >& oldStyleSheets, const Vector<RefPtr<CSSStyleSheet> >& newStylesheets, Vector<StyleSheetContents*>& addedSheets);
     bool activeLoadingStyleSheetLoaded(const Vector<RefPtr<CSSStyleSheet> >& newStyleSheets);
 
 protected:
     TreeScope& m_treeScope;
     bool m_hadActiveLoadingStylesheet;
     bool m_usesRemUnits;
 
     DocumentOrderedList m_styleSheetCandidateNodes;
     StyleSheetScopingNodeList m_scopingNodesForStyleScoped;
 };
 
 }
 
 #endif