WIP (Introduce WTF::NonNullPtr<T>.)

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 Apple Inc. All rights reserved.
  *
  * 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 706 matching lines @@
 
     void didAddAttribute(const QualifiedName&, const AtomicString&);
     void willModifyAttribute(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue);
     void didModifyAttribute(const QualifiedName&, const AtomicString&);
     void didRemoveAttribute(const QualifiedName&);
 
     void synchronizeAttribute(const QualifiedName&) const;
     void synchronizeAttribute(const AtomicString& localName) const;
 
     void updateId(const AtomicString& oldId, const AtomicString& newId);
-    void updateId(TreeScope&, const AtomicString& oldId, const AtomicString& newId);
+    void updateId(NonNullPtr<TreeScope>, const AtomicString& oldId, const AtomicString& newId);
     void updateName(const AtomicString& oldName, const AtomicString& newName);
-    void updateLabel(TreeScope&, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue);
+    void updateLabel(NonNullPtr<TreeScope>, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue);
 
     void scrollByUnits(int units, ScrollGranularity);
 
     virtual NodeType nodeType() const OVERRIDE FINAL;
     virtual bool childTypeAllowed(NodeType) const OVERRIDE FINAL;
 
     void setAttributeInternal(size_t index, const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
     void addAttributeInternal(const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
     void removeAttributeInternal(size_t index, SynchronizationOfLazyAttribute);
     void attributeChangedFromParserOrByCloning(const QualifiedName&, const AtomicString&, AttributeModificationReason);
@@ skipping 239 matching lines @@
     if (childNeedsDistributionRecalc() && !insertionPoint->childNeedsDistributionRecalc())
         insertionPoint->markAncestorsWithChildNeedsDistributionRecalc();
     return InsertionDone;
 }
 
 inline void Node::removedFrom(ContainerNode* insertionPoint)
 {
     ASSERT(insertionPoint->inDocument() || isContainerNode());
     if (insertionPoint->inDocument())
         clearFlag(InDocumentFlag);
-    if (isInShadowTree() && !treeScope().rootNode()->isShadowRoot())
+    if (isInShadowTree() && !treeScope()->rootNode()->isShadowRoot())
         clearFlag(IsInShadowTreeFlag);
 }
 
 inline void Element::invalidateStyleAttribute()
 {
     ASSERT(elementData());
     elementData()->m_styleAttributeIsDirty = true;
 }
 
 inline const StylePropertySet* Element::presentationAttributeStyle()
@@ skipping 91 matching lines @@
 
 inline const Attribute* ElementData::attributeItem(unsigned index) const
 {
     RELEASE_ASSERT(index < length());
     return attributeBase() + index;
 }
 
 } // namespace
 
 #endif