https://github.com/flutter/engine/compare/3a1a604d71a4...4663d357a360

git log 3a1a604d71a464b5b6013eed52a4c3657f0cce3c..4663d357a36043b7dcafa01fc88511f457cc1319 --no-merges --oneline
4663d357a Recommended implementation of combining characters implementation. (flutter/engine#7758)
d52121271 Revert "Roll src/third_party/dart fdfe40ea95..de2e7e7721 (7 commits)" (flutter/engine#7789)
a003c4678 Roll src/third_party/dart fdfe40ea95..de2e7e7721 (7 commits)

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 (chinmaygarde@google.com), and stop
the roller if necessary.