Display device specific up to date message on chromebook.

chrome/app/google_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are specific to
 Google Chrome. These strings will be translated for each locale that Google
 Chrome supports. If you update this file, be sure also to update
 chromium_strings.grd. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/google_chrome_strings.h" type="rc_header">
@@ skipping 576 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 (Google Chrome)">
           Google Chrome is up to date.
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_UP_TO_DATE" desc="Status label: Already up to date (Chrome 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 Google Chrome">
           Updating Google Chrome...
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_UPDATING" desc="Status label: Updating Chrome 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.">
           Chrome logo
         </message>
       </if>
 
     </messages>
   </release>
 </grit>