message: focus the window when reaching a breakpoint
diff: // specific language governing permissions and limitations
  // under the License.
  +import browser from "webextension-polyfill";
  import { action, computed, observable } from "mobx";
  import UiState from "./UiState";
  @@ -115,6 +116,15 @@ class PlaybackState {
  this.paused = false;
  }
  + @action.bound break() {
  + this.paused = true;
  + browser.windows.getCurrent().then(windowInfo => {
  + browser.windows.update(windowInfo.id, {
  + focused: true
  + });
  + });
  + }
  +
  @action.bound finishPlaying() {
  this.testState.set(this.currentRunningTest.id, this.hasFinishedSuccessfully ? PlaybackStates.Passed : PlaybackStates.Failed);
  if (!this.hasFinishedSuccessfully) {
  