Implement pop up add account menu (for Google Account).

lib/roles/device/plugins/service.js

@@ -505,6 +505,21 @@ module.exports = syrup.serial()
         })
     }
 
+    plugin.addAccountMenu = function() {
+      return runServiceCommand(
+        apk.wire.MessageType.DO_ADD_ACCOUNT_MENU
+      , new apk.wire.DoAddAccountMenuRequest()
+      )
+      .timeout(15000)
+      .then(function(data) {
+        var response = apk.wire.DoAddAccountMenuResponse.decode(data)
+        if (response.success) {
+          return true
+        }
+        throw new Error('Unable to show add account menu')
+      })
+    }
+
     plugin.setRingerMode = function(mode) {
       return runServiceCommand(
           apk.wire.MessageType.SET_RINGER_MODE