Roll engine ddaa9dc95f7b..bc41ab513932 (2 commits) (#48858)

https://github.com/flutter/engine/compare/ddaa9dc95f7b...bc41ab513932

git log ddaa9dc95f7b..bc41ab513932 --first-parent --oneline
2020-01-15 nurhan@google.com [web] Add Edge support for Flutter Engine unit-tests. (flutter/engine#15641)
2020-01-14 garyq@google.com Add FML_DCHECK to ensure layout before calling getters (flutter/engine#15635)


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

bin/internal/engine.version

-ddaa9dc95f7bb1a66fc794f101b97bfae988235b
+bc41ab513932694fccaed8c2d40e2e66630fdc88