Update NetworkStateNotifier to use message_center.

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 104 matching lines @@
     Initializing cellular modem...
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CELLULAR_SCANNING" desc="Message when scanning for cellular networks">
     Searching for cellular networks...
   </message>
 
   <!-- Other Network UI strings -->
   <message name="IDS_NETWORK_CONNECTION_ERROR_TITLE" desc="Title for network connection error notification">
     Network Connection Error
   </message>
-  <message name="IDS_NETWORK_CONNECTION_ERROR_MESSAGE_WITH_DETAILS" desc="Message for network connection error notification with details">
+  <message name="IDS_NETWORK_CONNECTION_ERROR_MESSAGE" desc="Message for network connection error notification">
     Failed to connect to network '<ph name="name">$1<ex>GoogleGuest</ex></ph>': <ph name="details">$2<ex>Unrecognized error</ex></ph>
   </message>
   <message name="IDS_NETWORK_CONNECTION_ERROR_MESSAGE_WITH_SERVER_MESSAGE" desc="Message for network connection error notification with details and a server message">
 Failed to connect to '<ph name="name">$1<ex>GoogleGuest</ex></ph>': <ph name="details">$2<ex>Unrecognized error</ex></ph>
 Server message: <ph name="server_msg">$3<ex>Incorrect password</ex></ph>
   </message>
+  <message name="IDS_NETWORK_CONNECTION_ERROR_MESSAGE_NO_NAME" desc="Message for network connection error where the network name is unavailable">
+    Failed to connect to network: <ph name="details">$2<ex>Unrecognized error</ex></ph>
+  </message>
   <message name="IDS_NETWORK_OUT_OF_CREDITS_TITLE" desc="Title for network out of data error notification">
     Network Connection Error
   </message>
   <message name="IDS_NETWORK_OUT_OF_CREDITS_BODY" desc="Message body for network out of data error notification">
-    You may have used up your mobile data allowance.
-  </message>
-  <message name="IDS_NETWORK_OUT_OF_CREDITS_LINK" desc="Link text for network out of data error notification">
-    Visit the <ph name="name">$1<ex>GoogleGuest</ex></ph> activation portal to buy more data.
+    You may have used up your mobile data allowance. Visit the <ph name="name">$1<ex>GoogleGuest</ex></ph> activation portal to buy more data.
   </message>
   <message name="IDS_NETWORK_UNRECOGNIZED_ERROR" desc="Unrecognized Network error text">
     Unrecognized error: <ph name="desc">$1<ex>ShillErrorString</ex></ph>
   </message>
   <message name="IDS_NETWORK_CELLULAR_ACTIVATED_TITLE" desc="Title for cellular activated notification">
     Cellular Activated
   </message>
   <message name="IDS_NETWORK_CELLULAR_ACTIVATED" desc="Text of the cellular activated notification">
     Congratulations! Your '<ph name="name">$1<ex>Generic Wireless</ex></ph>' data service has been activated and is ready to go.
   </message>
@@ skipping 148 matching lines @@
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_BLUETOOTH_DEVICE" desc="label used for bluetooth audio device">
     <ph name="device_name">$1<ex>Headphone</ex></ph> (Bluetooth)
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_HDMI_DEVICE" desc="label used for hdmi audio device">
     <ph name="device_name">$1<ex>Speaker</ex></ph> (HDMI)
   </message>
 
 </grit-part>