Adding new user menu section to the SystemTrayMenu & refactoring of user access

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 197 matching lines @@
       <message name="IDS_ASH_STATUS_TRAY_SPOKEN_FEEDBACK_ENABLED_BUBBLE" desc="The message shown on a bubble when spoken feedback is enabled">
 Spoken feedback is enabled.
 Press Ctrl+Alt+Z to disable.
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SETTINGS" desc="The label used for the settings item in the status tray.">
         Settings
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SIGN_OUT" desc="The label used for the button in the status tray to sign out of the system.">
         Sign out
       </message>
+      <message name="IDS_ASH_STATUS_TRAY_SIGN_OUT_ALL" desc="The label used for the button in the status tray to sign out all users of the system.">
+        Sign out all
+      </message>
       <message name="IDS_ASH_STATUS_TRAY_GUEST_LABEL" desc="The label used in the system tray's user card to indicate that the current session is a guest session.">
         Guest
       </message>
       <message name="IDS_ASH_STATUS_TRAY_EXIT_GUEST" desc="The label used for the button in the status tray to terminate a guest session.">
         Exit guest
       </message>
       <message name="IDS_ASH_STATUS_TRAY_KIOSK_LABEL" desc="The label used in the system tray's user card to indicate that the current session is running in demo mode.">
         Demo mode
       </message>
       <message name="IDS_ASH_STATUS_TRAY_EXIT_KIOSK" desc="The label used for the button in the status tray to terminate a session kiosk mode.">
@@ skipping 10 matching lines @@
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SMS" desc="The label used in the status tray for SMS.">
         SMS
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SMS_MESSAGES" desc="The label used in the default status tray view for SMS with the number of messages.">
         SMS messages: <ph name="MESSAGE_COUNT">$1<ex>3</ex></ph>
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SMS_NUMBER" desc="Sender for SMS messagees in the system tray.">
         SMS from <ph name="PHONE_NUMBER">$1<ex>08700 776655</ex></ph>
       </message>
+      <message name="IDS_ASH_STATUS_TRAY_SIGN_IN_ANOTHER_ACCOUNT" desc="The string for the button which lets the user add another account to the current session.">
+        Sign in another account...
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_CAPTION_CANNOT_ADD_USER" desc="The caption for the error message when the user has reached the limit of multi profile users.">
+        Can't sign into another account.
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_MESSAGE_CANNOT_ADD_USER" desc="The error message when the user has reached the limit of multi profile users.">
+        You can only have up to three accounts in multiple sign-in.
+      </message>
 
       <message name="IDS_ASH_STATUS_TRAY_BLUETOOTH" desc="The label used as the header in the bluetooth popup.">
         Bluetooth
       </message>
       <message name="IDS_ASH_STATUS_TRAY_BLUETOOTH_ENABLED" desc="The label used in the tray popup to notify that bluetooth is enabled.">
         Bluetooth enabled
       </message>
       <message name="IDS_ASH_STATUS_TRAY_BLUETOOTH_DISABLED" desc="The label used in the tray popup to notify that bluetooth is disabled.">
         Bluetooth disabled
       </message>
@@ skipping 242 matching lines @@
 
       <!-- ChromeOS-specific strings -->
       <if expr="pp_ifdef('chromeos')">
         <part file="ash_chromeos_strings.grdp" />
       </if>
 
     </messages>
   </release>
 </grit>