Move XMLHttpRequest related files to core/xmlhttprequest.

Source/modules/serviceworkers/Headers.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/serviceworkers/Headers.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/Iterator.h"
 #include "core/fetch/FetchUtils.h"
-#include "core/xml/XMLHttpRequest.h"
 #include "wtf/NotFound.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 namespace {
 
 class HeadersIterator final : public Iterator {
@@ skipping 323 matching lines @@
 {
     return new HeadersIterator(m_headerList, HeadersIterator::KeyValue);
 }
 
 void Headers::trace(Visitor* visitor)
 {
     visitor->trace(m_headerList);
 }
 
 } // namespace blink