Show notifications for Network Config errors

ash/ash_chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from ash_strings.grd).
      Everything in this file is wrapped in <if expr="pp_ifdef('chromeos')">. -->
 <grit-part>
 
   <!-- Status tray charging strings. -->
   <message name="IDS_ASH_STATUS_TRAY_LOW_POWER_CHARGER_TITLE" desc="The title of a notification indicating that a low-current USB charger has been connected.">
     Low-power charger connected
   </message>
   <message name="IDS_ASH_STATUS_TRAY_LOW_POWER_CHARGER_MESSAGE" desc="The message body of a notification indicating that a low-current USB charger has been connected.">
@@ skipping 226 matching lines @@
   </message>
   <message name="IDS_CHROMEOS_NETWORK_ERROR_EAP_LOCAL_TLS_FAILED" desc="Network error details in notifications: EAP_LOCAL_TLS_FAILED">
     Authentication certificate rejected locally
   </message>
   <message name="IDS_CHROMEOS_NETWORK_ERROR_EAP_REMOTE_TLS_FAILED" desc="Network error details in notifications: EAP_REMOTE_TLS_FAILED">
     Authentication certificate rejected remotely
   </message>
   <message name="IDS_CHROMEOS_NETWORK_ERROR_PPP_AUTH_FAILED" desc="Network error details in notifications: PPP_AUTH_FAILED">
     PPP authentication failed due to an incorrect username or password
   </message>
+  <message name="IDS_CHROMEOS_NETWORK_ERROR_CONFIGURE_FAILED" desc="Network error details in notifications: Configuration error">
+    Failed to configure network
+  </message>
   <message name="IDS_CHROMEOS_NETWORK_ERROR_UNRECOGNIZED" desc="Network error details in notifications: Unrecognized">
     Unrecognized error
   </message>
 
   <!-- Status tray screen capture strings. -->
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_CAPTURE_STOP" desc="label used for screen capture stop button">
     Stop
   </message>
 
   <!-- Status tray screen share strings. -->
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_SHARE_STOP" desc="label used for screen sharing stop button">
     Stop
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_SHARE_BEING_HELPED" desc="label for screen sharing notification">
     Sharing control of your screen via Hangouts.
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_SHARE_BEING_HELPED_NAME" desc="label for screen sharing notification with name">
     Sharing control of your screen with <ph name="HELPER_NAME">$1<ex>Walder Frey</ex></ph> via Hangouts.
   </message>
 
 </grit-part>