https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-blink-gen-property-trees/334

This log shows this 2 test are flaky:

- virtual/threaded/fast/animationworklet/animation-worklet-inside-iframe.html
- virtual/threaded/fast/events/pinch/scroll-visual-viewport-send-boundary-events.html (pass at next try 336)