Send net's ReferrerPolicy back to Blink while following redirects

net/url_request/url_request.cc

Index: net/url_request/url_request.cc
diff --git a/net/url_request/url_request.cc b/net/url_request/url_request.cc
index fa003e4dcd7d45af8a3d5bbdd7ba312596ae626b..933495d73319aa94b62f6c5ddc368e4b8fc6e22d 100644
--- a/net/url_request/url_request.cc
+++ b/net/url_request/url_request.cc
@@ -490,15 +490,6 @@ void URLRequest::SetReferrer(const std::string& 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;
 }