Implemented Document.contentType

Source/core/dom/Document.cpp

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1203 matching lines @@
     if (xmlStandalone())
         return "text/xml";
     if (isHTMLDocument())
         return "text/html";
 
     if (DocumentLoader* documentLoader = loader())
         return documentLoader->responseMIMEType();
     return String();
 }
 
+void Document::setMimeType(const AtomicString& mimeType)
+{
+    m_mimeType = mimeType;
+}
+
+AtomicString Document::contentType() const
+{
+    if (!m_mimeType.isEmpty())
+        return m_mimeType;
+
+    if (DocumentLoader* documentLoader = loader())
+        return documentLoader->mimeType();
+
+    String mimeType = suggestedMIMEType();
+    if (!mimeType.isEmpty())
+        return AtomicString(mimeType);
+
+    return AtomicString("application/xml");
+}
+
 Element* Document::elementFromPoint(int x, int y) const
 {
     if (!renderView())
         return 0;
 
     return TreeScope::elementFromPoint(x, y);
 }
 
 PassRefPtr<Range> Document::caretRangeFromPoint(int x, int y)
 {
@@ skipping 4171 matching lines @@
 void Document::defaultEventHandler(Event* event)
 {
     if (frame() && frame()->remotePlatformLayer()) {
         frame()->chromeClient().forwardInputEvent(this, event);
         return;
     }
     Node::defaultEventHandler(event);
 }
 
 } // namespace WebCore