Show notification when activating with no connection

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="pp_ifdef('chromeos')">. -->
 <grit-part>
   <!-- Idle Logout Dialog Strings -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog">
     Are you still there?
   </message>
   <message name="IDS_IDLE_LOGOUT_WARNING_RESTART" desc="Restart label for the idle logout dialog">
     This computer will reset in <ph name="LOGOUT_TIME_LEFT">$1<ex>20</ex></ph> seconds.
@@ skipping 150 matching lines @@
   </message>
   <message name="IDS_NETWORK_ENROLLMENT_HANDLER_BUTTON" desc="Text of the accept button for generating a new network certificate.">
     Get new certificate
   </message>
   <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">
     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_ACTIVATION_ERROR_TITLE" desc="Title for network connection error notification">
+    Network Activation Error
+  </message>
+  <message name="IDS_NETWORK_ACTIVATION_NEEDS_CONNECTION" desc="Message when attempting to activate a mobile network that requries a connection">
+    Activation of '<ph name="name">$1<ex>Generic Wireless</ex></ph>' requires a network connection.
+  </message>
   <message name="IDS_LOW_BATTERY_TITLE" desc="Title for low battery notification">
     Battery Low
   </message>
   <message name="IDS_LOW_BATTERY_MESSAGE" desc="Message for low battery notification">
     Less than <ph name="MINUTES">$1<ex>15 mins left</ex></ph>.
   </message>
   <message name="IDS_UPDATE_TITLE" desc="Title for update notification">
     System Update
   </message>
   <message name="IDS_UPDATE_ERROR" desc="Notification for failed update">
@@ skipping 3415 matching lines @@
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_SIGNOUT_REMINDER" desc="Text shown in the public account user pod, reminding the user to log out.">
     Your information will be removed when you sign out.
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_ENTER" desc="Label text for the sign-in button in the public account user pod.">
     Enter
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_ENTER_ACCESSIBLE_NAME" desc="Text to be spoken when focus is set to the sign-in button in the public account user pod.">
     Enter public session
   </message>
 </grit-part>