Move Fetch API releted code to modules/fetch.

Source/modules/serviceworkers/ResponseInit.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 ResponseInit_h
-#define ResponseInit_h
-
-#include "bindings/core/v8/Dictionary.h"
-#include "modules/serviceworkers/Headers.h"
-#include "platform/heap/Handle.h"
-#include "wtf/RefPtr.h"
-
-namespace blink {
-
-// FIXME: Use IDL dictionary instead of this class.
-class ResponseInit {
-    STACK_ALLOCATED();
-public:
-    ResponseInit()
-        : status(200)
-        , statusText("OK")
-    {
-    }
-    explicit ResponseInit(const Dictionary& options, ExceptionState& exceptionState)
-        : status(200)
-        , statusText("OK")
-    {
-        DictionaryHelper::get(options, "status", status);
-        // FIXME: Spec uses ByteString for statusText. http://crbug.com/347426
-        DictionaryHelper::get(options, "statusText", statusText);
-        DictionaryHelper::get(options, "headers", headers);
-        if (!headers) {
-            Vector<Vector<String> > headersVector;
-            if (DictionaryHelper::get(options, "headers", headersVector, exceptionState))
-                headers = Headers::create(headersVector, exceptionState);
-            else
-                DictionaryHelper::get(options, "headers", headersDictionary);
-        }
-    }
-
-    unsigned short status;
-    String statusText;
-    Member<Headers> headers;
-    Dictionary headersDictionary;
-};
-
-}
-
-#endif // ResponseInit_h