Add MetalayerMode to the palette.

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"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/ash_strings.h" type="rc_header">
@@ skipping 372 matching lines @@
       </message>
       <message name="IDS_ASH_STYLUS_TOOLS_CREATE_NOTE_ACTION" desc="Title of the capture screen action in the stylus tools (a pop-up panel next to the status tray). Clicking this opens up an application that the user can quickly jot a note down in.">
         New note
       </message>
       <message name="IDS_ASH_STYLUS_TOOLS_LASER_POINTER_MODE" desc="Title of the laser pointer in the palette (a pop-up panel next to the status tray). Clicking this turns the mouse into a laser pointer. Additionally, the palette tray is closed.">
         Laser pointer mode
       </message>
       <message name="IDS_ASH_STYLUS_TOOLS_MAGNIFIER_MODE" desc="Title of the magnification mode in the stylus tools. Clicking this button opens up a magnifier. The magnifier remains active until the user turns it off by tapping the same button again.">
         Magnifying glass mode
       </message>
+      <message name="IDS_ASH_STYLUS_TOOLS_METALAYER_MODE" desc="Title of the metalayer mode in the stylus tools. Clicking this button opens up the voice interaction overlay. The overlay remains active until the user completes the interaction.">
+        Metalayer mode
+      </message>
       <message name="IDS_ASH_STYLUS_TOOLS_TITLE" desc="The title of the stylus tools dialog in the ash shelf.">
         Stylus tools
       </message>
       <message name="IDS_ASH_PALETTE_SETTINGS" desc="The label on the setting button used to open palette setting page.">
         Stylus settings
       </message>
 
       <message name="IDS_ASH_TOAST_DISMISS_BUTTON" desc="The text button shown in toasts to close the toast immediately without waiting timeout.">
         DISMISS
       </message>
@@ skipping 592 matching lines @@
 
       <!-- Notification that an accelerator was pressed, so the user knows how to toggle it back -->
       <message name="IDS_HIGH_CONTRAST_ACCEL_MSG"
                desc="Notification message to tell users that they just pressed the Search+Shift+H shortcut to toggle High Contrast Mode, and that pressing it again will toggle it off.">
         High Contrast Mode enabled. Press Search+Shift+H again to toggle it off.
       </message>
     </messages>
   </release>
 </grit>