Regressions: https://flutter-flutter-perf.skia.org/t/?begin=1635946753&end=1635946755&subset=all
Affected roll: #92977

The picture cache count/memory metrics increased on 4 tests and decreased on 12.

This is likely due to raster cache logic changes in the partial repaint change, but I'm unsure if these metric changes are expected/reasonable or not.