Implement referrer policy

Fixes #26270
servo · bors-servo · May 12, 2020 · May 5, 2020 · May 5, 2020 · c14ab259d04848e9e598325dfd3919d5ca04342d
commit c14ab259d04848e9e598325dfd3919d5ca04342d
diff --git a/components/net/http_loader.rs b/components/net/http_loader.rs
@@ -817,7 +817,13 @@ pub fn http_redirect_fetch(
     request.url_list.push(location_url);
 
     // Step 14
-    // TODO implement referrer policy
+    if let Some(referrer_policy) = response
+        .actual_response()
+        .headers
+        .typed_get::<headers::ReferrerPolicy>()
+    {
+        request.referrer_policy = Some(referrer_policy.into());
+    }
 
     // Step 15
     let recursive_flag = request.redirect_mode != RedirectMode::Manual;