Move TreeBoundaryCrossingScopes to StyleEngine.

third_party/WebKit/Source/core/dom/StyleEngine.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)
@@ skipping 139 matching lines @@
   }
 
   bool usesRemUnits() const { return m_usesRemUnits; }
   void setUsesRemUnit(bool b) { m_usesRemUnits = b; }
 
   void resetCSSFeatureFlags(const RuleFeatureSet&);
 
   void didRemoveShadowRoot(ShadowRoot*);
   void shadowRootRemovedFromDocument(ShadowRoot*);
   void appendActiveAuthorStyleSheets();
+  void addTreeBoundaryCrossingScope(const TreeScope&);
+  const DocumentOrderedList& treeBoundaryCrossingScopes() const {
+    return m_treeBoundaryCrossingScopes;
+  }
+  void resetAuthorStyle(TreeScope&);
 
   StyleResolver* resolver() const { return m_resolver.get(); }
 
   StyleResolver& ensureResolver() {
     if (!m_resolver) {
       createResolver();
     } else if (m_resolver->hasPendingAuthorStyleSheets()) {
       viewportRulesChanged();
       m_resolver->appendPendingAuthorStyleSheets();
     }
@@ skipping 126 matching lines @@
   Member<DocumentStyleSheetCollection> m_documentStyleSheetCollection;
 
   typedef HeapHashMap<WeakMember<TreeScope>,
                       Member<ShadowTreeStyleSheetCollection>>
       StyleSheetCollectionMap;
   StyleSheetCollectionMap m_styleSheetCollectionMap;
 
   bool m_documentScopeDirty = true;
   UnorderedTreeScopeSet m_dirtyTreeScopes;
   UnorderedTreeScopeSet m_activeTreeScopes;
+  DocumentOrderedList m_treeBoundaryCrossingScopes;
 
   String m_preferredStylesheetSetName;
   String m_selectedStylesheetSetName;
 
   bool m_usesSiblingRules = false;
   bool m_usesFirstLineRules = false;
   bool m_usesWindowInactiveSelector = false;
   bool m_usesRemUnits = false;
   unsigned m_maxDirectAdjacentSelectors = 0;
 
@@ skipping 11 matching lines @@
 
   std::unique_ptr<StyleResolverStats> m_styleResolverStats;
   unsigned m_styleForElementCount = 0;
 
   friend class StyleEngineTest;
 };
 
 }  // namespace blink
 
 #endif