First-Party Cookies: Wire it up as an experimental web platform feature

net/base/layered_network_delegate.cc

Index: net/base/layered_network_delegate.cc
diff --git a/net/base/layered_network_delegate.cc b/net/base/layered_network_delegate.cc
index 95e423623453af1af7d71a3fdf31b6cc6796673b..9fd497397617bc562812a0c1c0e591ffa13986f2 100644
--- a/net/base/layered_network_delegate.cc
+++ b/net/base/layered_network_delegate.cc
@@ -252,6 +252,15 @@ void LayeredNetworkDelegate::OnCanEnablePrivacyModeInternal(
     const GURL& first_party_for_cookies) const {
 }
 
+bool LayeredNetworkDelegate::OnFirstPartyOnlyCookieExperimentEnabled() const {
+  OnFirstPartyOnlyCookieExperimentEnabledInternal();
+  return nested_network_delegate_->FirstPartyOnlyCookieExperimentEnabled();
+}
+
+void LayeredNetworkDelegate::OnFirstPartyOnlyCookieExperimentEnabledInternal()
+    const {
+}
+
 bool LayeredNetworkDelegate::
     OnCancelURLRequestWithPolicyViolatingReferrerHeader(
         const URLRequest& request,