First cut at Firefox import on OSX + stubs for Safari import.

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. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 2273 matching lines @@
       </message>
       <message name="IDS_IMPORT_FROM_IE" desc="browser combo box: Microsoft Internet Explorer">
         Microsoft Internet Explorer
       </message>
       <message name="IDS_IMPORT_FROM_FIREFOX" desc="browser combo box: Mozilla Firefox">
         Mozilla Firefox
       </message>
       <message name="IDS_IMPORT_FROM_GOOGLE_TOOLBAR" desc="browser combo box: Google Toolbar">
         Google Toolbar
       </message>
+      <message name="IDS_IMPORT_FROM_SAFARI" desc="browser combo box: Safari">
+        Safari
+      </message>
       <message name="IDS_IMPORT_ITEMS_LABEL" desc="Label before item select checkboxes">
         Select items to import:
       </message>
       <message name="IDS_IMPORT_HISTORY_CHKBOX" desc="Checkbox for importing browsing history">
         Browsing history
       </message>
       <message name="IDS_IMPORT_FAVORITES_CHKBOX" desc="Checkbox for importing favorites">
         Favorites/Bookmarks
       </message>
       <message name="IDS_IMPORT_COOKIES_CHKBOX" desc="Checkbox for importing cookies">
@@ skipping 2153 matching lines @@
     <message name="IDS_OPEN_FILE_DIALOG_TITLE" desc="The default title for the Open File file chooser dialog (single file).">
       Open File
     </message>
     <message name="IDS_OPEN_FILES_DIALOG_TITLE" desc="The default title for the Open File file chooser dialog (multiple files).">
       Open Files
     </message>
 
     </messages>
   </release>
 </grit>