Omit "int" when using "unsigned" modifier

Source/core/xml/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 95 matching lines @@
     m_forbiddenRequestHeaders.add("via");
 }
 
 static bool isSetCookieHeader(const AtomicString& name)
 {
     return equalIgnoringCase(name, "set-cookie") || equalIgnoringCase(name, "set-cookie2");
 }
 
 static void replaceCharsetInMediaType(String& mediaType, const String& charsetValue)
 {
-    unsigned int pos = 0, len = 0;
+    unsigned pos = 0, len = 0;
 
     findCharsetInMediaType(mediaType, pos, len);
 
     if (!len) {
         // When no charset found, do nothing.
         return;
     }
 
     // Found at least one existing charset, replace all occurrences with new charset.
     while (len) {
         mediaType.replace(pos, len, charsetValue);
-        unsigned int start = pos + charsetValue.length();
+        unsigned start = pos + charsetValue.length();
         findCharsetInMediaType(mediaType, pos, len, start);
     }
 }
 
 static const XMLHttpRequestStaticData* staticData = 0;
 
 static const XMLHttpRequestStaticData* createXMLHttpRequestStaticData()
 {
     staticData = new XMLHttpRequestStaticData;
     return staticData;
@@ skipping 1254 matching lines @@
     return ActiveDOMObject::executionContext();
 }
 
 void XMLHttpRequest::trace(Visitor* visitor)
 {
     visitor->trace(m_responseBlob);
     visitor->trace(m_responseStream);
 }
 
 } // namespace WebCore