Implement request's redirect mode and RequestRedirect for Fetch

Source/modules/fetch/FetchRequestData.cpp

Index: Source/modules/fetch/FetchRequestData.cpp
diff --git a/Source/modules/fetch/FetchRequestData.cpp b/Source/modules/fetch/FetchRequestData.cpp
index 94178f8d14c833dfb120e873553321ce7c371ef6..b046685a7fc635c14f43a67b43e4c78787a9626d 100644
--- a/Source/modules/fetch/FetchRequestData.cpp
+++ b/Source/modules/fetch/FetchRequestData.cpp
@@ -32,6 +32,7 @@ FetchRequestData* FetchRequestData::create(const WebServiceWorkerRequest& webReq
     request->m_referrer.setURL(webRequest.referrer());
     request->setMode(webRequest.mode());
     request->setCredentials(webRequest.credentialsMode());
+    request->setRedirect(webRequest.redirectMode());
     request->setMIMEType(request->m_headerList->extractMIMEType());
     return request;
 }
@@ -51,6 +52,7 @@ FetchRequestData* FetchRequestData::clone() const
     request->m_referrer = m_referrer;
     request->m_mode = m_mode;
     request->m_credentials = m_credentials;
+    request->m_redirect = m_redirect;
     request->m_responseTainting = m_responseTainting;
     request->m_mimeType = m_mimeType;
     return request;
@@ -74,6 +76,7 @@ FetchRequestData::FetchRequestData()
     , m_sameOriginDataURLFlag(false)
     , m_mode(WebURLRequest::FetchRequestModeNoCORS)
     , m_credentials(WebURLRequest::FetchCredentialsModeOmit)
+    , m_redirect(WebURLRequest::FetchRedirectModeFollow)
     , m_responseTainting(BasicTainting)
 {
 }