Mac: Turn on tab overview mode by default.

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 3930 matching lines @@
       </message>
       <message name="IDS_FLAGS_RESTART_BUTTON" desc="Text on a button that restarts chrome when clicked. ">
         Restart Now
       </message>
       <message name="IDS_FLAGS_DISABLE" desc="The link for disabling a labs experiment.">
         Disable
       </message>
       <message name="IDS_FLAGS_ENABLE" desc="The link for enabling a labs experiment.">
         Enable
       </message>
-      <message name="IDS_FLAGS_TABPOSE_NAME" desc="Name of the 'Tab Overview' lab.">
-        Tab Overview
-      </message>
-      <message name="IDS_FLAGS_TABPOSE_DESCRIPTION" desc="Description of the 'Tab Overview' lab.">
-        Swipe down with three fingers on your trackpad to see an overview of all your tabs. Click on a thumbnail to select it. Works great in fullscreen mode.
-      </message>
       <message name="IDS_FLAGS_MEDIA_PLAYER_NAME" desc="Name of the 'Media Player' lab.">
         Media Player
       </message>
       <message name="IDS_FLAGS_MEDIA_PLAYER_DESCRIPTION" desc="Description of the 'Media Player' lab.">
         Enable Media Player.
       </message>
       <message name="IDS_FLAGS_ADVANCED_FS_NAME" desc="Name of the 'Advanced File System' lab.">
         Advanced File System
       </message>
       <message name="IDS_FLAGS_ADVANCED_FS_DESCRIPTION" desc="Description of the 'Advanced File System' lab.">
@@ skipping 7359 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>