Referrer Policy: Add new policies to URLRequest.

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index c8341d63c690d42639a97299692867a4a7bddab2..85ac2bf6214b07e56275281549c1ad0933e04d43 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -231,9 +231,9 @@ void AbortRequestBeforeItStarts(ResourceMessageFilter* filter,
 }
 
 void SetReferrerForRequest(net::URLRequest* request, const Referrer& referrer) {
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (!referrer.url.is_valid() ||
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kNoReferrers)) {
+      command_line->HasSwitch(switches::kNoReferrers)) {
     request->SetReferrer(std::string());
   } else {
     request->SetReferrer(referrer.url.spec());
@@ -247,10 +247,18 @@ void SetReferrerForRequest(net::URLRequest* request, const Referrer& referrer) {
     case blink::WebReferrerPolicyOrigin:
       net_referrer_policy = net::URLRequest::NEVER_CLEAR_REFERRER;
       break;
+    case blink::WebReferrerPolicyNoReferrerWhenDowngrade:
+      net_referrer_policy =
+          net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
+      break;
     case blink::WebReferrerPolicyDefault:
     default:
       net_referrer_policy =
-          net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
+          command_line->HasSwitch(switches::kReducedReferrerGranularity)
+              ? net::URLRequest::
+                    REDUCE_REFERRER_GRANULARITY_ON_TRANSITION_CROSS_ORIGIN
+              : net::URLRequest::
+                    CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
       break;
   }
   request->set_referrer_policy(net_referrer_policy);