Move Fetch API releted code to modules/fetch.

Source/modules/fetch/GlobalFetch.h

 // 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.
 
 #ifndef GlobalFetch_h
 #define GlobalFetch_h
 
 #include "bindings/core/v8/ScriptPromise.h"
-#include "modules/serviceworkers/Request.h"
+#include "modules/fetch/Request.h"
 
 namespace blink {
 
 class Dictionary;
 class DOMWindow;
 class ExceptionState;
 class ScriptState;
 class WorkerGlobalScope;
 
 class GlobalFetch {
 public:
     static ScriptPromise fetch(ScriptState*, DOMWindow&, const RequestInfo&, const Dictionary&, ExceptionState&);
     static ScriptPromise fetch(ScriptState*, WorkerGlobalScope&, const RequestInfo&, const Dictionary&, ExceptionState&);
 };
 
 } // namespace blink
 
 #endif // GlobalFetch_h