Implement request's redirect mode and RequestRedirect for Fetch

Source/modules/fetch/RequestTest.cpp

Index: Source/modules/fetch/RequestTest.cpp
diff --git a/Source/modules/fetch/RequestTest.cpp b/Source/modules/fetch/RequestTest.cpp
index 398ebed6a8425b633a277fa8edc8f22ef2ebce69..c5e421050b11db3a5f8a976f747e8ae2784eac9d 100644
--- a/Source/modules/fetch/RequestTest.cpp
+++ b/Source/modules/fetch/RequestTest.cpp
@@ -69,10 +69,12 @@ TEST_F(ServiceWorkerRequestTest, FromAndToWebRequest)
     const String referrer = "http://www.referrer.com/";
     const WebReferrerPolicy referrerPolicy = WebReferrerPolicyAlways;
     const WebURLRequest::RequestContext context = WebURLRequest::RequestContextAudio;
+    const WebURLRequest::FetchRedirectMode redirect = WebURLRequest::FetchRedirectModeFollow;
 
     webRequest.setURL(url);
     webRequest.setMethod(method);
     webRequest.setRequestContext(context);
+    webRequest.setRedirectMode(redirect);
     for (int i = 0; headers[i].key; ++i)
         webRequest.setHeader(WebString::fromUTF8(headers[i].key), WebString::fromUTF8(headers[i].value));
     webRequest.setReferrer(referrer, referrerPolicy);
@@ -82,6 +84,7 @@ TEST_F(ServiceWorkerRequestTest, FromAndToWebRequest)
     EXPECT_EQ(url, request->url());
     EXPECT_EQ(method, request->method());
     EXPECT_EQ("audio", request->context());
+    EXPECT_EQ("follow", request->redirect());
     EXPECT_EQ(referrer, request->referrer());
 
     Headers* requestHeaders = request->headers();
@@ -101,6 +104,7 @@ TEST_F(ServiceWorkerRequestTest, FromAndToWebRequest)
     EXPECT_EQ(url, KURL(secondWebRequest.url()));
     EXPECT_EQ(method, String(secondWebRequest.method()));
     EXPECT_EQ(context, secondWebRequest.requestContext());
+    EXPECT_EQ(redirect, secondWebRequest.redirectMode());
     EXPECT_EQ(referrer, KURL(secondWebRequest.referrerUrl()));
     EXPECT_EQ(referrerPolicy, secondWebRequest.referrerPolicy());
     EXPECT_EQ(webRequest.headers(), secondWebRequest.headers());