Turn StyleSharing to 11.

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 20 matching lines @@
 #include "sky/engine/platform/heap/Handle.h"
 #include "sky/engine/wtf/text/AtomicString.h"
 
 namespace blink {
 
 class ContainerNode;
 class DOMSelection;
 class Document;
 class Element;
 class HitTestResult;
+class Node;
 class ScopedStyleResolver;
-class Node;
 
 // A class which inherits both Node and TreeScope must call clearRareData() in its destructor
 // so that the Node destructor no longer does problematic NodeList cache manipulation in
 // the destructor.
 class TreeScope {
 public:
     TreeScope* parentTreeScope() const { return m_parentTreeScope; }
 
     bool isInclusiveOlderSiblingShadowRootOrAncestorTreeScopeOf(const TreeScope&) const;
 
@@ skipping 17 matching lines @@
 
     DOMSelection* getSelection() const;
 
     bool applyAuthorStyles() const;
 
     // Used by the basic DOM mutation methods (e.g., appendChild()).
     void adoptIfNeeded(Node&);
 
     ContainerNode& rootNode() const { return *m_rootNode; }
 
+    bool hasSameStyles(TreeScope&);
 
 #if !ENABLE(OILPAN)
     // Nodes belonging to this scope hold guard references -
     // these are enough to keep the scope from being destroyed, but
     // not enough to keep it from removing its children. This allows a
     // node that outlives its scope to still have a valid document
     // pointer without introducing reference cycles.
     void guardRef()
     {
         ASSERT(!deletionHasBegun());
@@ skipping 79 matching lines @@
 };
 
 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_