git@github.com:flutter/engine.git/compare/9a3042cb50a7...98379d7b6118

git log 9a3042cb50a7..98379d7b6118 --no-merges --oneline
2019-11-13 iska.kaushik@gmail.com [build] Make --engine-version flag optional (flutter/engine#13803)
2019-11-13 iska.kaushik@gmail.com Disable LTO on Fuchsia (flutter/engine#13842)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jimgraham@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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