Implement $Secure- cookie prefix

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
diff --git a/net/url_request/url_request_http_job.cc b/net/url_request/url_request_http_job.cc
index c317469cb137ad7ec840f229a7ffeb26dce62ad1..d097214c41879144f4f5c2a7e472e79fe270e9c1 100644
--- a/net/url_request/url_request_http_job.cc
+++ b/net/url_request/url_request_http_job.cc
@@ -660,8 +660,7 @@ void URLRequestHttpJob::DoLoadCookies() {
 
   // TODO(mkwst): Drop this `if` once we decide whether or not to ship
   // first-party cookies: https://crbug.com/459154
-  if (network_delegate() &&
-      network_delegate()->FirstPartyOnlyCookieExperimentEnabled())
+  if (network_delegate() && network_delegate()->ExperimentalFeaturesEnabled())
     options.set_first_party_url(request_->first_party_for_cookies());
   else
     options.set_include_first_party_only();
@@ -749,6 +748,8 @@ void URLRequestHttpJob::SaveNextCookie() {
     CookieOptions options;
     options.set_include_httponly();
     options.set_server_time(response_date_);
+    if (network_delegate()->ExperimentalFeaturesEnabled())
+      options.set_enforce_prefixes();
 
     CookieStore::SetCookiesCallback callback(base::Bind(
         &URLRequestHttpJob::OnCookieSaved, weak_factory_.GetWeakPtr(),