Use correct cascading order for Shadow DOM v1

third_party/WebKit/Source/core/dom/Document.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 768 matching lines @@
     bool queryCommandSupported(const String& command, ExceptionState&);
     String queryCommandValue(const String& command, ExceptionState&);
 
     KURL openSearchDescriptionURL();
 
     // designMode support
     bool inDesignMode() const { return m_designMode; }
     String designMode() const;
     void setDesignMode(const String&);
 
+    bool useCascadeOrderForShadowDOMV1() const { return m_useCascadeOrderForShadowDOMV1; }
+    void setUseCascadeOrderForShadowDOMV1() { m_useCascadeOrderForShadowDOMV1 = true; }
+
     Document* parentDocument() const;
     Document& topDocument() const;
     WeakPtrWillBeRawPtr<Document> contextDocument();
 
     ScriptRunner* scriptRunner() { return m_scriptRunner.get(); }
 
     HTMLScriptElement* currentScript() const { return !m_currentScriptStack.isEmpty() ? m_currentScriptStack.last().get() : nullptr; }
     void pushCurrentScript(PassRefPtrWillBeRawPtr<HTMLScriptElement>);
     void popCurrentScript();
 
@@ skipping 491 matching lines @@
     unsigned m_xmlStandalone : 2;
     unsigned m_hasXMLDeclaration : 1;
 
     AtomicString m_contentLanguage;
 
     DocumentEncodingData m_encodingData;
 
     bool m_designMode;
     bool m_isRunningExecCommand;
 
+    bool m_useCascadeOrderForShadowDOMV1;

[rune, 2016/03/17 10:59:02]

I think StyleEngine would be a better place for this.

[kochi, 2016/03/18 09:00:52]

Done.

+
     WillBeHeapHashSet<RawPtrWillBeWeakMember<const LiveNodeListBase>> m_listsInvalidatedAtDocument;
 #if ENABLE(OILPAN)
     // Oilpan keeps track of all registered NodeLists.
     //
     // FIXME: Oilpan: improve - only need to know if a NodeList
     // is currently alive or not for the different types.
     HeapHashSet<WeakMember<const LiveNodeListBase>> m_nodeLists[numNodeListInvalidationTypes];
 #else
     unsigned m_nodeListCounts[numNodeListInvalidationTypes];
 #endif
@@ skipping 141 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h