Implement request's redirect mode and RequestRedirect for Fetch

public/platform/WebServiceWorkerRequest.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 WebServiceWorkerRequest_h
 #define WebServiceWorkerRequest_h
 
 #include "WebCommon.h"
 #include "public/platform/WebPrivatePtr.h"
 #include "public/platform/WebReferrerPolicy.h"
@@ skipping 50 matching lines @@
     void setReferrer(const WebString&, WebReferrerPolicy);
     WebURL referrerUrl() const;
     WebReferrerPolicy referrerPolicy() const;
 
     void setMode(WebURLRequest::FetchRequestMode);
     WebURLRequest::FetchRequestMode mode() const;
 
     void setCredentialsMode(WebURLRequest::FetchCredentialsMode);
     WebURLRequest::FetchCredentialsMode credentialsMode() const;
 
+    void setRedirectMode(WebURLRequest::FetchRedirectMode);
+    WebURLRequest::FetchRedirectMode redirectMode() const;
+
     void setRequestContext(WebURLRequest::RequestContext);
     WebURLRequest::RequestContext requestContext() const;
 
     void setFrameType(WebURLRequest::FrameType);
     WebURLRequest::FrameType frameType() const;
 
     void setIsReload(bool);
     bool isReload() const;
 
     void setClient(const WebServiceWorkerClientInfo&);
     WebServiceWorkerClientInfo& client() const;
 
 #if INSIDE_BLINK
     const HTTPHeaderMap& headers() const;
     PassRefPtr<BlobDataHandle> blobDataHandle() const;
     const Referrer& referrer() const;
 #endif
 
 private:
     WebPrivatePtr<WebServiceWorkerRequestPrivate> m_private;
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerRequest_h