Store the Document's encoding on the 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 333 matching lines @@
     PassRefPtr<NodeList> nodesFromRect(int centerX, int centerY,
         unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding,
         HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::DisallowShadowContent) const;
     Element* elementFromPoint(int x, int y) const;
     PassRefPtr<Range> caretRangeFromPoint(int x, int y);
 
     String readyState() const;
 
     String defaultCharset() const;
 
-    String inputEncoding() const { return Document::encoding(); }
-    String charset() const { return Document::encoding(); }
-    String characterSet() const { return Document::encoding(); }
+    String inputEncoding() const { return Document::encodingName(); }
+    String charset() const { return Document::encodingName(); }
+    String characterSet() const { return Document::encodingName(); }
 
-    String encoding() const;
+    String encodingName() const;
 
     void setCharset(const String&);
 
     void setContent(const String&);
 
     String suggestedMIMEType() const;
 
     String contentLanguage() const { return m_contentLanguage; }
     void setContentLanguage(const String&);
 
@@ skipping 518 matching lines @@
     void suspendScriptedAnimationControllerCallbacks();
     void resumeScriptedAnimationControllerCallbacks();
 
     void finishedParsing();
 
     void documentWillBecomeInactive();
 
     void setDecoder(PassRefPtr<TextResourceDecoder>);
     TextResourceDecoder* decoder() const { return m_decoder.get(); }
 
+    void setEncoding(const WTF::TextEncoding&);
+    const WTF::TextEncoding& encoding() const { return m_encoding; }
+
     String displayStringModifiedByEncoding(const String&) const;
     PassRefPtr<StringImpl> displayStringModifiedByEncoding(PassRefPtr<StringImpl>) const;
     void displayBufferModifiedByEncoding(LChar* buffer, unsigned len) const
     {
         displayBufferModifiedByEncodingInternal(buffer, len);
     }
     void displayBufferModifiedByEncoding(UChar* buffer, unsigned len) const
     {
         displayBufferModifiedByEncodingInternal(buffer, len);
     }
@@ skipping 368 matching lines @@
     RefPtr<Document> m_transformSourceDocument;
 
     String m_xmlEncoding;
     String m_xmlVersion;
     unsigned m_xmlStandalone : 2;
     unsigned m_hasXMLDeclaration : 1;
 
     String m_contentLanguage;
 
     RefPtr<TextResourceDecoder> m_decoder;
+    WTF::TextEncoding m_encoding;
 
     InheritedBool m_designMode;
 
     HashSet<LiveNodeListBase*> m_listsInvalidatedAtDocument;
     unsigned m_nodeListCounts[numNodeListInvalidationTypes];
 
     OwnPtr<SVGDocumentExtensions> m_svgExtensions;
 
     Vector<AnnotatedRegionValue> m_annotatedRegions;
     bool m_hasAnnotatedRegions;
@@ skipping 133 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == documentInternal();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h