Represent kiosk apps as user pods instead of menu items.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index a65882b6630066f68aad212be439764b6ae59f21..06f8dc5adccb44843adee088c399095fc4e26d28 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -14174,6 +14174,9 @@ After you create a new supervised user, you can manage their settings at any tim
         <message name="IDS_ADD_USER_BUTTON" desc="Text shown on an add user button on login/locker screen">
           Add User
         </message>
+        <message name="IDS_LAUNCH_APP_BUTTON" desc="Test shown on the button that launches kiosk app from Chrome OS login UI">
+          Launch App
+        </message>
         <message name="IDS_SCREEN_LOCK_SIGN_OUT">
           Sign out
         </message>
@@ -14188,6 +14191,9 @@ After you create a new supervised user, you can manage their settings at any tim
         <message name="IDS_ADD_USER_BUTTON" desc="Text shown on an add user button on login/locker screen">
           Add user
         </message>
+        <message name="IDS_LAUNCH_APP_BUTTON" desc="Test shown on the button that launches kiosk app from Chrome OS login UI">
+          Launch app
+        </message>
         <message name="IDS_SCREEN_LOCK_SIGN_OUT">
           Sign out
         </message>