message: fix(benchpress): forward compat with selenium_webdriver 3.6.0
  This was a local mod in google3 introduced by cl
  PR Close
diff: @@ -34,7 +34,9 @@ export class SeleniumWebDriverAdapter extends WebDriverAdapter {
  capabilities(): Promise<{[key: string]: any}> {
  return this._driver.getCapabilities().then((capsObject: any) => {
  const localData: {[key: string]: any} = {};
  - capsObject.forEach((value: any, key: string) => { localData[key] = value; });
  + for (const key of capsObject.keys()) {
  + localData[key] = capsObject.get(key);
  + }
  return localData;
  });
  }
  