Display device specific up to date message on chromebook.

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 If you update this file, be sure also to update google_chrome_strings.grd. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
@@ skipping 575 matching lines @@
           Channel changed. Restart your device to apply changes.
         </message>
       </if>
       <if expr="not chromeos">
         <message name="IDS_UPGRADE_UP_TO_DATE" desc="Status label: Already up to date (Chromium)">
           Chromium is up to date.
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_UP_TO_DATE" desc="Status label: Already up to date (Chromium OS)">
-          Your device is up to date.
+          Your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> is up to date.
         </message>
       </if>
       <if expr="not chromeos">
         <message name="IDS_UPGRADE_UPDATING" desc="Status label: Updating Chromium">
           Updating Chromium...
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_UPDATING" desc="Status label: Updating Chromium OS">
           Updating your device...
@@ skipping 564 matching lines @@
         </message>
         <message name="IDS_METRO_FLOW_LOGO_STRING_ALT"
                  desc="Alt text for the faded Chrome logo image.">
           Chromium logo
         </message>
       </if>
 
     </messages>
   </release>
 </grit>