Make Document.inputEncoding an explicit alias of Document.characterSet

Source/core/xmlhttprequest/XMLHttpRequest.cpp

 /*
  *  Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org>
  *  Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org>
  *  Copyright (C) 2008, 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 771 matching lines @@
     if (areMethodAndURLValidForSend()) {
         if (getRequestHeader("Content-Type").isEmpty()) {
             // FIXME: this should include the charset used for encoding.
             setRequestHeaderInternal("Content-Type", "application/xml");
         }
 
         // FIXME: According to XMLHttpRequest Level 2, this should use the Document.innerHTML algorithm
         // from the HTML5 specification to serialize the document.
         String body = createMarkup(document);
 
-        // FIXME: This should use value of document.inputEncoding to determine the encoding to use.
         httpBody = FormData::create(UTF8Encoding().encode(body, WTF::EntitiesForUnencodables));
     }
 
     createRequest(httpBody.release(), exceptionState);
 }
 
 void XMLHttpRequest::send(const String& body, ExceptionState& exceptionState)
 {
     WTF_LOG(Network, "XMLHttpRequest %p send() String '%s'", this, body.utf8().data());
 
@@ skipping 979 matching lines @@
     visitor->trace(m_responseDocument);
     visitor->trace(m_responseDocumentParser);
     visitor->trace(m_progressEventThrottle);
     visitor->trace(m_upload);
     visitor->trace(m_blobLoader);
     XMLHttpRequestEventTarget::trace(visitor);
     DocumentParserClient::trace(visitor);
 }
 
 } // namespace blink