Roll engine 3f27c5724c1d..74af88ba9f8b (2 commits) (#36229)

https://github.com/flutter/engine/compare/3f27c5724c1d...74af88ba9f8b

git log 3f27c5724c1d92c14f8353419dfc6cb40a063aa2..74af88ba9f8bb7437edd128ad0eb1926bd2c1ee4 --no-merges --oneline
74af88ba9 Make the virtual display's window translucent (flutter/engine#9828)
bf91bdb8b Roll src/third_party/skia 563d044c0e76..9d844d8ce5a2 (10 commits) (flutter/engine#9831)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (garyq@google.com), and stop
the roller if necessary.

bin/internal/engine.version

-3f27c5724c1d92c14f8353419dfc6cb40a063aa2
+74af88ba9f8bb7437edd128ad0eb1926bd2c1ee4