Send net's ReferrerPolicy back to Blink while following redirects

net/url_request/url_request.cc

 // 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.
 
 #include "net/url_request/url_request.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 472 matching lines @@
   GURL referrer_url(referrer);
   if (referrer_url.is_valid()) {
     referrer_ = referrer_url.GetAsReferrer().spec();
   } else {
     referrer_ = referrer;
   }
 }
 
 void URLRequest::set_referrer_policy(ReferrerPolicy referrer_policy) {
   DCHECK(!is_pending_);
-  // External callers shouldn't be setting NO_REFERRER or
-  // ORIGIN. |referrer_policy_| is only applied during server redirects,
-  // so external callers must set the referrer themselves using
-  // SetReferrer() for the initial request. Once the referrer has been
-  // set to an origin or to an empty string, there is no point in
-  // setting the policy to NO_REFERRER or ORIGIN as it would have the
-  // same effect as using NEVER_CLEAR_REFERRER across redirects.
-  DCHECK_NE(referrer_policy, NO_REFERRER);
-  DCHECK_NE(referrer_policy, ORIGIN);
   referrer_policy_ = referrer_policy;
 }
 
 void URLRequest::set_delegate(Delegate* delegate) {
   DCHECK(!delegate_);
   DCHECK(delegate);
   delegate_ = delegate;
 }
 
 void URLRequest::Start() {
@@ skipping 721 matching lines @@
     out->clear();
 }
 
 void URLRequest::set_status(URLRequestStatus status) {
   DCHECK(status_.is_io_pending() || status_.is_success() ||
          (!status.is_success() && !status.is_io_pending()));
   status_ = status;
 }
 
 }  // namespace net