Ash:Strings - Update quit message to sign out on chrome-os

ash/ash_strings.grd

Index: ash/ash_strings.grd
diff --git a/ash/ash_strings.grd b/ash/ash_strings.grd
index 07a6f3ffb468ddc8256822e66f828336eb929b83..b3f9417c2db2e351268fafc6441482d0b7a5c38d 100644
--- a/ash/ash_strings.grd
+++ b/ash/ash_strings.grd
@@ -581,6 +581,12 @@ Press Shift + Alt to switch.
       <message name="IDS_ASH_SCREENSHOT_NOTIFICATION_TEXT_FAIL" desc="The text of the notification when taking a screenshot failed.">
         Failed to save screenshot
       </message>
+      <message name="IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT" desc="The text of the popup when the user preses the exit shortcut in chrome-os.">
+        Press Ctrl+Shift+Q twice to sign out.
+      </message>
+      <message name="IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT_ACCESSIBLE" desc="The message used by accessibility to indicate the content of the popup when the user preses the exit shortcut in chrome-os.">
+        Press Control Shift Q twice to sign out.
+      </message>
       <message name="IDS_ASH_EXIT_WARNING_POPUP_TEXT" desc="The text of the popup when the user preses the exit shortcut.">
         Press Ctrl+Shift+Q twice to quit.
       </message>