Distinguish identical messages with different meanings

ui/strings/ui_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by app/ that
 need to be translated for each locale.-->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
     <!-- TODO add each of your output files.  Modify the three below, and add
@@ skipping 386 matching lines @@
         Cancel
       </message>
       <message name="IDS_APP_CLOSE" desc="A generic term for Close on buttons and menus.">
         Close
       </message>
 
       <!-- Key names -->
       <message name="IDS_APP_ESC_KEY" desc="Escape key">
         Esc
       </message>
-      <message name="IDS_APP_TAB_KEY" desc="Tab key">
+      <message name="IDS_APP_TAB_KEY" desc="Tab key" meaning="Tab key">
         Tab
       </message>
       <message name="IDS_APP_INSERT_KEY" desc="Insert key">
         Ins
       </message>
       <message name="IDS_APP_HOME_KEY" desc="Home key">
         Home
       </message>
       <message name="IDS_APP_DELETE_KEY" desc="Delete key">
         Del
@@ skipping 205 matching lines @@
       </message>
       <message name="IDS_APP_LIST_SPEECH_HINT_TEXT" desc="The text label in the speech recognition UI to ask the user to speak the search query">
         Speak now
       </message>
       <message name="IDS_APP_LIST_SPEECH_NETWORK_ERROR_HINT_TEXT" desc="The text label in the speech recognition UI to show the speech recognition can't start because of network error.">
         No internet connection
       </message>
     </messages>
   </release>
 </grit>