Fix status area accessability issues.

ash/ash_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains the strings for ash.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/ash_strings.h" type="rc_header">
@@ skipping 422 matching lines @@
       </message>
       <message name="IDS_ASH_WEB_NOTFICATION_TRAY_SETTINGS" desc="The menu entry or button for visiting the appropriate settings page.">
         Settings...
       </message>
       <message name="IDS_ASH_WEB_NOTFICATION_TRAY_CLEAR_ALL" desc="The button for clearing all notifications.">
         Clear All
       </message>
       <message name="IDS_ASH_WEB_NOTFICATION_TRAY_NO_MESSAGES" desc="The message displayed in the message center when there are no notifications.">
         You have no notifications. Relax!
       </message>
+      <message name="IDS_ASH_WEB_NOTIFICATION_TRAY_ACCESSIBLE_NAME" desc="The accessible name of the web notification tray (message center).">
+        Message Center
+      </message>
       <message name="IDS_ASH_MAXIMIZE_WINDOW" desc="A help text to show that when the button gets clicked the window get maximized.">
         Maximize
       </message>
       <message name="IDS_ASH_SNAP_WINDOW_RIGHT" desc="A help text to show that when the button gets clicked the window get snapped to the right side.">
         Right
       </message>
       <message name="IDS_ASH_SNAP_WINDOW_LEFT" desc="A help text to show that when the button gets clicked the window get snapped to the left side.">
         Left
       </message>
       <message name="IDS_ASH_RESTORE_WINDOW" desc="A help text to show that when the button gets clicked the window gets restored to its normal - non maximized - state.">
         Restore
       </message>
       <message name="IDS_ASH_MINIMIZE_WINDOW" desc="A help text to show that when the button gets clicked the window gets minimized.">
         Minimize
       </message>
     </messages>
   </release>
 </grit>