Remove needsShadowTreeWalker flag

Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 245 matching lines @@
     void setIsCustomElement();
 
     virtual bool isMediaControlElement() const { return false; }
     virtual bool isMediaControls() const { return false; }
     virtual bool isWebVTTElement() const { return false; }
     bool isStyledElement() const { return getFlag(IsStyledElementFlag); }
     virtual bool isAttributeNode() const { return false; }
     virtual bool isCharacterDataNode() const { return false; }
     virtual bool isFrameOwnerElement() const { return false; }
     virtual bool isPluginElement() const { return false; }
-    virtual bool isInsertionPointNode() const { return false; }
 
     bool isDocumentNode() const;
     bool isTreeScope() const { return treeScope()->rootNode() == this; }
     bool isDocumentFragment() const { return getFlag(IsDocumentFragmentFlag); }
     bool isShadowRoot() const { return isDocumentFragment() && isTreeScope(); }
-    bool isInsertionPoint() const { return getFlag(NeedsShadowTreeWalkerFlag) && isInsertionPointNode(); }
-
-    bool needsShadowTreeWalker() const;
-    bool needsShadowTreeWalkerSlow() const;
-    void setNeedsShadowTreeWalker() { setFlag(NeedsShadowTreeWalkerFlag); }
-    void resetNeedsShadowTreeWalker() { setFlag(needsShadowTreeWalkerSlow(), NeedsShadowTreeWalkerFlag); }
+    bool isInsertionPoint() const { return getFlag(IsInsertionPointFlag); }
 
     bool inNamedFlow() const { return getFlag(InNamedFlowFlag); }
     bool hasCustomStyleCallbacks() const { return getFlag(HasCustomStyleCallbacksFlag); }
 
     bool hasSyntheticAttrChildNodes() const { return getFlag(HasSyntheticAttrChildNodesFlag); }
     void setHasSyntheticAttrChildNodes(bool flag) { setFlag(flag, HasSyntheticAttrChildNodesFlag); }
 
     // If this node is in a shadow tree, returns its shadow host. Otherwise, returns 0.
     Element* shadowHost() const;
     // If this node is in a shadow tree, returns its shadow host. Otherwise, returns this.
@@ skipping 440 matching lines @@
         SelfOrAncestorHasDirAutoFlag = 1 << 17,
 
         HasNameOrIsEditingTextFlag = 1 << 18,
 
         InNamedFlowFlag = 1 << 19,
         HasSyntheticAttrChildNodesFlag = 1 << 20,
         HasCustomStyleCallbacksFlag = 1 << 21,
         HasScopedHTMLStyleChildFlag = 1 << 22,
         HasEventTargetDataFlag = 1 << 23,
         V8CollectableDuringMinorGCFlag = 1 << 24,
-        NeedsShadowTreeWalkerFlag = 1 << 25,
+        IsInsertionPointFlag = 1 << 25,
         IsInShadowTreeFlag = 1 << 26,
         IsCustomElement = 1 << 27,
 
         DefaultNodeFlags = IsParsingChildrenFinishedFlag
     };
 
     // 4 bits remaining
 
     bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
     void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); } 
     void setFlag(NodeFlags mask) const { m_nodeFlags |= mask; } 
     void clearFlag(NodeFlags mask) const { m_nodeFlags &= ~mask; } 
 
 protected:
     enum ConstructionType { 
         CreateOther = DefaultNodeFlags,
         CreateText = DefaultNodeFlags | IsTextFlag,
         CreateContainer = DefaultNodeFlags | IsContainerFlag, 
         CreateElement = CreateContainer | IsElementFlag, 
-        CreatePseudoElement =  CreateElement | InDocumentFlag | NeedsShadowTreeWalkerFlag,
-        CreateShadowRoot = CreateContainer | IsDocumentFragmentFlag | NeedsShadowTreeWalkerFlag | IsInShadowTreeFlag,
+        CreatePseudoElement =  CreateElement | InDocumentFlag,
+        CreateShadowRoot = CreateContainer | IsDocumentFragmentFlag | IsInShadowTreeFlag,
         CreateDocumentFragment = CreateContainer | IsDocumentFragmentFlag,
         CreateStyledElement = CreateElement | IsStyledElementFlag, 
         CreateHTMLElement = CreateStyledElement | IsHTMLFlag,
         CreateSVGElement = CreateStyledElement | IsSVGFlag,
         CreateDocument = CreateContainer | InDocumentFlag,
-        CreateInsertionPoint = CreateHTMLElement | NeedsShadowTreeWalkerFlag,
+        CreateInsertionPoint = CreateHTMLElement | IsInsertionPointFlag,
         CreateEditingText = CreateText | HasNameOrIsEditingTextFlag,
     };
 
     Node(TreeScope* treeScope, ConstructionType type)
         : m_nodeFlags(type)
         , m_parentOrShadowHostNode(0)
         , m_treeScope(treeScope)
         , m_previous(0)
         , m_next(0)
     {
@@ skipping 149 matching lines @@
 
 } //namespace
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif