Make CrOS and Chromium settings UI string the same.

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 1294 matching lines @@
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_CELLULAR_APN_CANCEL" desc="Cellular device cancel APN settings edit button under network details in chrome:settings/internet.">
     Cancel
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_CELLULAR_APN_OTHER" desc="Select user defined APN in the lost of predefined APNs under network details in chrome:settings/internet.">
     Other...
   </message>
 
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_CONTROL_TITLE" desc="In settings Internet options, Title of the section which houses the enable/disable buttons.">
     General
   </message>
-  <message name="IDS_OPTIONS_SETTINGS_LANGUAGES_CUSTOMIZE" desc="In settings system options, the label for the customize button for languages and input">
-    Customize languages and input...
-  </message>
   <message name="IDS_OPTIONS_SETTINGS_LANGUAGES_MODIFIER_KEYS_CUSTOMIZE" desc="In settings system options, the label for the customize button for modifier keys">
     Modifier keys...
   </message>
 
   <message name="IDS_SIM_UNLOCK_ENTER_PIN_TITLE" desc="Title of the SIM card unlock dialog in chrome:sim-unlock.">
     Enter SIM card PIN
   </message>
   <message name="IDS_SIM_ENTER_PIN_MESSAGE" desc="Message on the the SIM card dialog asking to enter PIN in chrome:sim-unlock.">
     Please enter PIN.
   </message>
@@ skipping 2153 matching lines @@
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_INFO_FORMAT" desc="Template for text shown in the public account user pod, informing the user that this is a public, managed account.">
     This device is owned by <ph name="DOMAIN">$1<ex>yourdomain.com</ex></ph> and will be used by others after you.
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_SIGNOUT_REMINDER" desc="Text shown in the public account user pod, reminding the user to log out.">
     Please remember to sign out when you're done.
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_ENTER" desc="Label text for the sign-in button in the public account user pod.">
     Enter
   </message>
 </grit-part>