Apply Referrer-Policy header when following redirects

net/url_request/url_request.h

 // Copyright (c) 2012 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 NET_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 84 matching lines @@
   // on CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE: If the request
   // downgrades from HTTPS to HTTP, the referrer will be cleared. If the request
   // transitions cross-origin (but does not downgrade), the referrer's
   // granularity will be reduced (currently stripped down to an origin rather
   // than a full URL). Same-origin requests will send the full referrer.
   enum ReferrerPolicy {
     CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
     REDUCE_REFERRER_GRANULARITY_ON_TRANSITION_CROSS_ORIGIN,
     ORIGIN_ONLY_ON_TRANSITION_CROSS_ORIGIN,
     NEVER_CLEAR_REFERRER,
+    MAX_REFERRER_POLICY
   };
 
   // First-party URL redirect policy: During server redirects, the first-party
   // URL for cookies normally doesn't change. However, if the request is a
   // top-level first-party request, the first-party URL should be updated to the
   // URL on every redirect.
   enum FirstPartyURLPolicy {
     NEVER_CHANGE_FIRST_PARTY_URL,
     UPDATE_FIRST_PARTY_URL_ON_REDIRECT,
   };
@@ skipping 741 matching lines @@
 
   // The proxy server used for this request, if any.
   HostPortPair proxy_server_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_