system tray ui change for AllowOnlyPolicyNetworksToConnect

ui/chromeos/ui_chromeos_strings.grd

Index: ui/chromeos/ui_chromeos_strings.grd
diff --git a/ui/chromeos/ui_chromeos_strings.grd b/ui/chromeos/ui_chromeos_strings.grd
index 7e3683979f30dcdda403d49f2dffd8abd751dc03..67f09719e03b5d3b10f3131ae1752485a7dece1f 100644
--- a/ui/chromeos/ui_chromeos_strings.grd
+++ b/ui/chromeos/ui_chromeos_strings.grd
@@ -150,6 +150,12 @@
       <message name="IDS_ASH_STATUS_TRAY_NETWORK_NOT_CONNECTED" desc="Description in status area or network list when no network is connected.">
         No network
       </message>
+      <message name="IDS_ASH_STATUS_TRAY_NETWORK_PROHIBITED" desc="Tooltip in network list when no network is prohibited by policy.">
+        This network is disabled by your administrator.
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_NETWORK_PROHIBITED_OTHER" desc="Tooltip in network list for joining other network when connecting unmanaged network is prohibited">
+        Connecting to other networks is disabled by your administrator.
+      </message>
 
       <message name="IDS_ASH_STATUS_TRAY_NO_NETWORKS" desc="The message to display in the network info bubble when it is otherwise empty.">
         No network information available