Remove global set of ScopedStyleResolvers.

sky/engine/core/dom/TreeScope.h

 /*
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  * Copyright (C) 2012 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 95 matching lines @@
     void removedLastRefToScope();
 
     bool isInclusiveAncestorOf(const TreeScope&) const;
     unsigned short comparePosition(const TreeScope&) const;
 
     const TreeScope* commonAncestorTreeScope(const TreeScope& other) const;
     TreeScope* commonAncestorTreeScope(TreeScope& other);
 
     Element* getElementByAccessKey(const String& key) const;
 
-    ScopedStyleResolver* scopedStyleResolver() const { return m_scopedStyleResolver.get(); }
-    ScopedStyleResolver& ensureScopedStyleResolver();
-    void clearScopedStyleResolver();
+    ScopedStyleResolver& scopedStyleResolver() const { return *m_scopedStyleResolver; }
 
 protected:
     TreeScope(ContainerNode&, Document&);
     explicit TreeScope(Document&);
     virtual ~TreeScope();
 
 #if !ENABLE(OILPAN)
     void destroyTreeScopeData();
 #endif
 
@@ skipping 20 matching lines @@
     void beginDeletion() { }
 #endif
 #endif
 
     bool rootNodeHasTreeSharedParent() const;
 
     RawPtr<ContainerNode> m_rootNode;
     RawPtr<Document> m_document;
     RawPtr<TreeScope> m_parentTreeScope;
 
-#if !ENABLE(OILPAN)
-    int m_guardRefCount;
-#endif
+    OwnPtr<ScopedStyleResolver> m_scopedStyleResolver;
 
     OwnPtr<DocumentOrderedMap> m_elementsById;
     OwnPtr<DocumentOrderedMap> m_imageMapsByName;
     OwnPtr<DocumentOrderedMap> m_labelsByForAttribute;
 
-    OwnPtr<ScopedStyleResolver> m_scopedStyleResolver;
+    mutable RefPtr<DOMSelection> m_selection;
 
-    mutable RefPtr<DOMSelection> m_selection;
+    int m_guardRefCount;
 };
 
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES(TreeScope)
 
 HitTestResult hitTestInDocument(const Document*, int x, int y);
 TreeScope* commonTreeScope(Node*, Node*);
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_DOM_TREESCOPE_H_