message: Add support of quick test mode into PC framework
  Cr-Commit-Position: refs/heads/master@{#28525}
diff: @@ -55,6 +55,8 @@ constexpr TimeDelta kStatsPollingStopTimeout = TimeDelta::Seconds<1>();
  constexpr TimeDelta kAliveMessageLogInterval = TimeDelta::Seconds<30>();
  +constexpr int kQuickTestModeRunDurationMs = 100;
  +
  // Field trials to enable Flex FEC advertising and receiving.
  constexpr char kFlexFecEnabledFieldTrials[] =
  "WebRTC-FlexFEC-03-Advertised/Enabled/WebRTC-FlexFEC-03/Enabled/";
  @@ -358,7 +360,12 @@ void PeerConnectionE2EQualityTest::Run(RunParams run_params) {
  });
  rtc::Event done;
  + bool is_quick_test_enabled = field_trial::IsEnabled("WebRTC-QuickPerfTest");
  + if (is_quick_test_enabled) {
  + done.Wait(kQuickTestModeRunDurationMs);
  + } else {
  done.Wait(run_params.run_duration.ms());
  + }
  rtc::Event stats_polling_stopped;
  task_queue_->PostTask([&stats_polling_stopped, this]() {
  