Add gnubby authentication to remoting host

remoting/host/policy_hack/policy_watcher.cc

Index: remoting/host/policy_hack/policy_watcher.cc
diff --git a/remoting/host/policy_hack/policy_watcher.cc b/remoting/host/policy_hack/policy_watcher.cc
index 23b6c78196efa651bfcf0e4c94ddf78847bd946c..4b7456c45748a0a9622489589f5378708d8f8366 100644
--- a/remoting/host/policy_hack/policy_watcher.cc
+++ b/remoting/host/policy_hack/policy_watcher.cc
@@ -101,6 +101,9 @@ const char PolicyWatcher::kHostTokenValidationUrlPolicyName[] =
 const char PolicyWatcher::kHostAllowClientPairing[] =
     "RemoteAccessHostAllowClientPairing";
 
+const char PolicyWatcher::kHostAllowGnubbyAuthPolicyName[] =
+    "RemoteAccessHostAllowGnubbyAuth";
+
 const char PolicyWatcher::kHostDebugOverridePoliciesName[] =
     "RemoteAccessHostDebugOverridePolicies";
 
@@ -121,6 +124,7 @@ PolicyWatcher::PolicyWatcher(
   default_values_->SetString(kHostTokenUrlPolicyName, std::string());
   default_values_->SetString(kHostTokenValidationUrlPolicyName, std::string());
   default_values_->SetBoolean(kHostAllowClientPairing, true);
+  default_values_->SetBoolean(kHostAllowGnubbyAuthPolicyName, false);
 #if !defined(NDEBUG)
   default_values_->SetString(kHostDebugOverridePoliciesName, std::string());
 #endif