message: explicitly take globals from window
diff: *
  */
  import browser from "webextension-polyfill";
  +const Selenium = window.Selenium;
  +const BrowserBot = window.BrowserBot;
  +const TargetSelecter = window.TargetSelecter;
  +const locatorBuilders = window.locatorBuilders;
  -var selenium = new Selenium(BrowserBot.createForWindow(window));
  +const selenium = new Selenium(BrowserBot.createForWindow(window));
  let contentSideexTabId = window.contentSideexTabId;
  function doCommands(request, sender, sendResponse) {
  