Add gnubby authentication to remoting host

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index ddb145a4032690814ce4b7062de3538ccad980b2..685ba0718db7ba5c14c0fdb403ffc3e652e345c1 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1993,6 +1993,10 @@ const char kRemoteAccessHostRequireCurtain[] =
 const char kRemoteAccessHostAllowClientPairing[] =
     "remote_access.host_allow_client_pairing";
 
+// Whether Chrome Remote Desktop can proxy gnubby authentication traffic.
+const char kRemoteAccessHostAllowGnubbyAuth[] =
+    "remote_access.host_allow_gnubby_auth";
+
 // The last used printer and its settings.
 const char kPrintPreviewStickySettings[] =
     "printing.print_preview_sticky_settings";