"up-to-date" should only use hyphens when used as compound modifier of a noun

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 555 matching lines @@
       </message>
 
       <!-- Google API keys info bar -->
       <message name="IDS_MISSING_GOOGLE_API_KEYS" desc="Message shown when Google API keys are missing. This message is followed by a 'Learn more' link.">
         Google API keys are missing. Some functionality of Chromium will be disabled.
       </message>
 
       <!-- About Chrome page -->
       <if expr="not chromeos">
         <message name="IDS_UPGRADE_SUCCESSFUL_RELAUNCH" desc="Status label: Successfully updated Chromium">
-          Nearly up-to-date! Relaunch Chromium to finish updating.
+          Nearly up to date! Relaunch Chromium to finish updating.
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_SUCCESSFUL_RELAUNCH" desc="Status label: Successfully updated Chromium OS">
-          Nearly up-to-date! Restart your device to finish updating.
+          Nearly up to date! Restart your device to finish updating.
         </message>
       </if>
       <if expr="chromeos">
         <message name="IDS_UPGRADE_SUCCESSFUL_CHANNEL_SWITCH" desc="Status label: Channel was successfully switched on Chromium OS">
           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.
@@ skipping 617 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>