Implement request's redirect mode and RequestRedirect for Fetch

Source/modules/fetch/FetchRequestData.h

Index: Source/modules/fetch/FetchRequestData.h
diff --git a/Source/modules/fetch/FetchRequestData.h b/Source/modules/fetch/FetchRequestData.h
index 788ba4fd4efaaa8fb266e657e36264e2fa98fc49..312eef1d870223cf6018dd714d2a9e3ad4f499d1 100644
--- a/Source/modules/fetch/FetchRequestData.h
+++ b/Source/modules/fetch/FetchRequestData.h
@@ -79,6 +79,8 @@ public:
     WebURLRequest::FetchRequestMode mode() const { return m_mode; }
     void setCredentials(WebURLRequest::FetchCredentialsMode credentials) { m_credentials = credentials; }
     WebURLRequest::FetchCredentialsMode credentials() const { return m_credentials; }
+    void setRedirect(WebURLRequest::FetchRedirectMode redirect) { m_redirect = redirect; }
+    WebURLRequest::FetchRedirectMode redirect() const { return m_redirect; }
     void setResponseTainting(Tainting tainting) { m_responseTainting = tainting; }
     Tainting tainting() const { return m_responseTainting; }
     FetchHeaderList* headerList() const { return m_headerList.get(); }
@@ -108,6 +110,7 @@ private:
     // FIXME: Support m_synchronousFlag;
     WebURLRequest::FetchRequestMode m_mode;
     WebURLRequest::FetchCredentialsMode m_credentials;
+    WebURLRequest::FetchRedirectMode m_redirect;
     // FIXME: Support m_useURLCredentialsFlag;
     // FIXME: Support m_manualRedirectFlag;
     // FIXME: Support m_redirectCount;