Add (uneditable) display of extension keywords to the search engine manager.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 1257 matching lines @@
         Keyword must be empty or unique
       </message>
       <message name="IDS_SEARCH_ENGINES_EDITOR_MAIN_SEPARATOR"
                desc="Title above the set of keywords the user has modified and or explicitly created">
         Default search options
       </message>
       <message name="IDS_SEARCH_ENGINES_EDITOR_OTHER_SEPARATOR"
                desc="Title above the set of keywords Chrome automatically created as the user browses">
         Other search engines
       </message>
+      <message name="IDS_SEARCH_ENGINES_EDITOR_EXTENSIONS_SEPARATOR"
+               desc="Title above the set of keywords installed by active extensions">
+        Search engines added by extensions
+      </message>
 
       <message name="IDS_SEARCH_ENGINES_EDITOR_DEFAULT_ENGINE"
                desc="Engine name displayed for the engine in the list that is currently marked as default">
         <ph name="ENGINE_NAME">$1<ex>Google</ex></ph> (Default)
       </message>
 
       <message name="IDS_DEFAULT_SEARCH_TITLE" desc="The title of the default search engine dialog. This dialog asks if the user would like to set a new default search engine.">
         Change Default Search Engine
       </message>
 
@@ skipping 11663 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>