message: pass the tabId and windowId to plugins
diff: @@ -246,7 +246,10 @@ function doSeleniumCommand(id, command, parsedTarget, value, res, implicitTime =
  }
  function doPluginCommand(id, command, target, value) {
  - return executeCommand(command, target, value).then(() => {
  + return executeCommand(command, target, value, {
  + tabId: extCommand.currentPlayingTabId,
  + windowId: extCommand.currentPlayingWindowId
  + }).then(() => {
  PlaybackState.setCommandState(id, PlaybackStates.Passed);
  }).catch(err => {
  PlaybackState.setCommandState(id, PlaybackStates.Failed, err.message);
  