[CUPS] Implement the Print Job notification.

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="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 6468 matching lines @@
   </message>
   <message name="IDS_FLAGS_ENABLE_EHV_INPUT_NAME" desc="Name of the about: flag for enabling emoji, handwriting and voice input on opt-in IME menu.">
     Emoji, handwriting and voice input on opt-in IME menu
     </message>
   <message name="IDS_FLAGS_ENABLE_EHV_INPUT_DESCRIPTION" desc="Description of the about: flag enabling emoji, handwriting and voice input on opt-in IME menu.">
     Enable access to emoji, handwriting and voice input form opt-in IME menu.
   </message>
   <message name="IDS_HATS_DONE_BUTTON_LABEL" desc="Label used for the done button at the end of survey">
     Done
   </message>
+  
+  <!-- Print Job Notification -->
+  <message name="IDS_PRINT_JOB_WAITING_NOTIFICATION_MESSAGE" desc="Message of the waiting-for-printing notification.">
+    Waiting to print <ph name="PAGE_NUMBER">$1<ex>5</ex></ph> pages to <ph name="PRINTER_NAME">$2<ex>printer</ex></ph>
+  </message>
+  <message name="IDS_PRINT_JOB_PRINTING_NOTIFICATION_MESSAGE" desc="Message of the printing-in-progress notification.">
+    Now printing <ph name="PAGE_NUMBER">$1<ex>5</ex></ph> pages to <ph name="PRINTER_NAME">$2<ex>printer</ex></ph>
+  </message>
+  <message name="IDS_PRINT_JOB_DONE_NOTIFICATION_MESSAGE" desc="Message of the successful printing notitification.">
+    Successfully printed <ph name="PAGE_NUMBER">$1<ex>5</ex></ph> pages to <ph name="PRINTER_NAME">$2<ex>printer</ex></ph>
+  </message>
+  <message name="IDS_PRINT_JOB_ERROR_NOTIFICATION_MESSAGE" desc="Message of the error printing notification.">
+    Error printing <ph name="PAGE_NUMBER">$1<ex>5</ex></ph> pages to <ph name="PRINTER_NAME">$2<ex>printer</ex></ph> 
+  </message>
+  <message name="IDS_PRINT_JOB_NOTIFICATION_CANCEL_BUTTON" desc="Text on the button for the user to cancel the current print job.">
+    Cancel printing
+  </message>
+  <message name="IDS_PRINT_JOB_NOTIFICATION_PAUSE_BUTTON" desc="Text on the button for the user to pause the current print job.">
+    Pause printing
+  </message>
+  <message name="IDS_PRINT_JOB_NOTIFICATION_RESUME_BUTTON" desc="Text on the button for the user to resume the current print job.">
+    Resume printing
+  </message>
+  <message name="IDS_PRINT_JOB_NOTIFICATION_GET_HELP_BUTTON" desc="Text on the button for the user to get help about the current print job.">
+    Get help
+  </message>
 </grit-part>