Remove the implicit wrench menu items for browser actions.

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 928 matching lines @@
         </message>
         <message name="IDS_CLEAR_BROWSING_DATA" desc="The text label for the menu item for clearing of browsing data">
           &amp;Clear browsing data...
         </message>
         <message name="IDS_SHOW_DOWNLOADS" desc="The show downloads menu in the app menu">
           &amp;Downloads
         </message>
         <message name="IDS_SHOW_EXTENSIONS" desc="The show extensions menu in the app menu">
           &amp;Extensions
         </message>
-        <message name="IDS_MANAGE_EXTENSIONS" desc="The manage extensions menu item in the extensions submenu">
-          &amp;Manage extensions
-        </message>
         <message name="IDS_OPTIONS" desc="The text label of the Options menu item">
           &amp;Options
         </message>
         <message name="IDS_HELP_PAGE" desc="The text label of the Help menu item">
           H&amp;elp
         </message>
         <message name="IDS_ABOUT" desc="The text label of the About Chrome menu item">
           About &amp;<ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>
         </message>
         <message name="IDS_EXIT" desc="The text label of the Exit menu item">
@@ skipping 4738 matching lines @@
         Calculating remaining time
       </message>
       <message name="IDS_STATUSBAR_BATTERY_IS_CHARGED" desc="In the power menu button, the battery is charged message.">
         Battery is charged
       </message>
     </if>
 
     </messages>
   </release>
 </grit>