Added constness to the hashmap on Document.

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)
@@ skipping 329 matching lines @@
   Element* createElement(const QualifiedName&, CreateElementFlags);
 
   Element* elementFromPoint(int x, int y) const;
   HeapVector<Member<Element>> elementsFromPoint(int x, int y) const;
   Range* caretRangeFromPoint(int x, int y);
   Element* scrollingElement();
   // When calling from C++ code, use this method. scrollingElement() is
   // just for the web IDL implementation.
   Element* scrollingElementNoLayout();
 
-  void addStyleReattachData(Node&, StyleReattachData&);
-  StyleReattachData getStyleReattachData(Node&);
+  void addStyleReattachData(const Node&, StyleReattachData&);
+  StyleReattachData getStyleReattachData(const Node&) const;
 
   String readyState() const;
 
   AtomicString characterSet() const { return Document::encodingName(); }
 
   AtomicString encodingName() const;
 
   void setContent(const String&);
 
   String suggestedMIMEType() const;
@@ skipping 1081 matching lines @@
   Member<LocalDOMWindow> m_domWindow;
   TraceWrapperMember<HTMLImportsController> m_importsController;
 
   Member<ResourceFetcher> m_fetcher;
   Member<DocumentParser> m_parser;
   Member<ContextFeatures> m_contextFeatures;
 
   // This HashMap is used to stash information (ComputedStyle, nextTextSibling)
   // generated in the Style Resolution phase that is required in the
   // Layout Tree construction phase.
-  HeapHashMap<Member<Node>, StyleReattachData> m_styleReattachDataMap;
+  HeapHashMap<Member<const Node>, StyleReattachData> m_styleReattachDataMap;
 
   bool m_wellFormed;
 
   // Document URLs.
   KURL m_url;  // Document.URL: The URL from which this document was retrieved.
   KURL m_baseURL;  // Node.baseURI: The URL to use when resolving relative URLs.
   KURL m_baseURLOverride;  // An alternative base URL that takes precedence over
                            // m_baseURL (but not m_baseElementURL).
   KURL m_baseElementURL;   // The URL set by the <base> element.
   KURL m_cookieURL;        // The URL to use for cookie access.
@@ skipping 257 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