Implement redirect() API for Fetch Response

Source/modules/fetch/Response.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 Response_h
 #define Response_h
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/modules/v8/UnionTypesModules.h"
@@ skipping 23 matching lines @@
     static Response* create(ExecutionContext*, ExceptionState&);
     static Response* create(ExecutionContext*, const BodyInit&, const Dictionary&, ExceptionState&);
 
     static Response* create(ExecutionContext*, Blob*, const ResponseInit&, ExceptionState&);
     static Response* create(ExecutionContext*, FetchResponseData*);
     static Response* create(ExecutionContext*, const WebServiceWorkerResponse&);
 
     static Response* createClone(const Response&);
 
     static Response* error(ExecutionContext*);
+    static Response* redirect(ExecutionContext*, const String& url, unsigned short status, ExceptionState&);
 
     const FetchResponseData* response() const { return m_response; }
 
     // From Response.idl:
     String type() const;
     String url() const;
     unsigned short status() const;
     bool ok() const;
     String statusText() const;
     Headers* headers() const;
@@ skipping 20 matching lines @@
     Response(ExecutionContext*, FetchResponseData*);
     Response(ExecutionContext*, FetchResponseData*, Headers*);
 
     const Member<FetchResponseData> m_response;
     const Member<Headers> m_headers;
 };
 
 } // namespace blink
 
 #endif // Response_h