Move Fetch API releted code to modules/fetch.

Source/modules/serviceworkers/GlobalFetch.h

Index: Source/modules/serviceworkers/GlobalFetch.h
diff --git a/Source/modules/serviceworkers/GlobalFetch.h b/Source/modules/serviceworkers/GlobalFetch.h
deleted file mode 100644
index 01fe984662b3dea36d1a4a476118730a94221bea..0000000000000000000000000000000000000000
--- a/Source/modules/serviceworkers/GlobalFetch.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// 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"
-
-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