Clean up the initializer mess in Document.

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 833 matching lines @@
 
     // designMode support
     enum InheritedBool { off = false, on = true, inherit };    
     void setDesignMode(InheritedBool value);
     InheritedBool getDesignMode() const;
     bool inDesignMode() const;
 
     Document* parentDocument() const;
     Document* topDocument() const;
 
-    int docID() const { return m_docID; }
-    
     ScriptRunner* scriptRunner() { return m_scriptRunner.get(); }
 
     void applyXSLTransform(ProcessingInstruction* pi);
     PassRefPtr<Document> transformSourceDocument() { return m_transformSourceDocument; }
     void setTransformSourceDocument(Document* doc) { m_transformSourceDocument = doc; }
 
     void setTransformSource(PassOwnPtr<TransformSource>);
     TransformSource* transformSource() const { return m_transformSource.get(); }
 
     void incDOMTreeVersion() { m_domTreeVersion = ++s_globalTreeVersion; }
@@ skipping 317 matching lines @@
     void addMutationEventListenerTypeIfEnabled(ListenerType);
 
     void didAssociateFormControlsTimerFired(Timer<Document>*);
 
     void styleResolverThrowawayTimerFired(Timer<Document>*);
     Timer<Document> m_styleResolverThrowawayTimer;
     double m_lastStyleResolverAccessTime;
 
     OwnPtr<StyleResolver> m_styleResolver;
     bool m_didCalculateStyleResolver;
-    bool m_hasDirtyStyleResolver;
     bool m_hasNodesWithPlaceholderStyle;
     bool m_needsNotifyRemoveAllPendingStylesheet;
     // But sometimes you need to ignore pending stylesheet count to
     // force an immediate layout when requested by JS.
     bool m_ignorePendingStylesheets;
 
     // If we do ignore the pending stylesheet count, then we need to add a boolean
     // to track that this happened so that we can do a full repaint when the stylesheets
     // do eventually load.
     PendingSheetLayout m_pendingSheetLayout;
@@ skipping 110 matching lines @@
 
     RefPtr<SerializedScriptValue> m_pendingStateObject;
     double m_startTime;
     bool m_overMinimumLayoutThreshold;
     
     OwnPtr<ScriptRunner> m_scriptRunner;
 
     OwnPtr<TransformSource> m_transformSource;
     RefPtr<Document> m_transformSourceDocument;
 
-    int m_docID; // A unique document identifier used for things like document-specific mapped attributes.
-
     String m_xmlEncoding;
     String m_xmlVersion;
     unsigned m_xmlStandalone : 2;
     unsigned m_hasXMLDeclaration : 1;
 
     String m_contentLanguage;
 
     RefPtr<TextResourceDecoder> m_decoder;
 
     InheritedBool m_designMode;
@@ skipping 174 matching lines @@
     trackForDebugging();
 #endif
     InspectorCounters::incrementCounter(InspectorCounters::NodeCounter);
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h