Implement new referrer policies

net/url_request/url_request.h

Index: net/url_request/url_request.h
diff --git a/net/url_request/url_request.h b/net/url_request/url_request.h
index 41410703af7ee903e588d502d1284dcb7680e667..157cc76446d79e88a2e1c9a75c30ef8fa849f595 100644
--- a/net/url_request/url_request.h
+++ b/net/url_request/url_request.h
@@ -105,6 +105,11 @@ class NET_EXPORT URLRequest : public base::SupportsUserData {
     // Strip the referrer down to the origin regardless of the redirect
     // location.
     ORIGIN,
+    // Clear the referrer on cross-origin redirect locations.
+    CLEAR_REFERRER_ON_TRANSITION_CROSS_ORIGIN,
+    // Strip the referrer down to the origin, but clear it entirely if the
+    // protocol changes from HTTPS to HTTP.
+    ORIGIN_CLEAR_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
     // Always clear the referrer regardless of the redirect location.
     NO_REFERRER,
     MAX_REFERRER_POLICY