message: Add GetStats at end of PeerConnection quality tests
  Cr-Commit-Position: refs/heads/master@{#29360}
diff: @@ -375,9 +375,11 @@ void PeerConnectionE2EQualityTest::Run(RunParams run_params) {
  RTC_LOG(INFO) << "Test is done, initiating disconnect sequence.";
  - task_queue_->SendTask([this]() {
  + task_queue_->SendTask([&stats_poller, this]() {
  RTC_DCHECK_RUN_ON(task_queue_.get());
  stats_polling_task_.Stop();
  + // Get final end-of-call stats.
  + stats_poller.PollStatsAndNotifyObservers();
  });
  // We need to detach AEC dumping from peers, because dump uses |task_queue_|
  