message: pass the frameId to plugins
diff: @@ -277,6 +277,7 @@ function doPluginCommand(id, command, target, value, implicitTime, implicitCount
  commandId: id,
  runId: PlaybackState.runId,
  testId: PlaybackState.currentRunningTest.id,
  + frameId: extCommand.getCurrentPlayingFrameId(),
  tabId: extCommand.currentPlayingTabId,
  windowId: extCommand.currentPlayingWindowId
  }).then(res => {
  