Roll engine be20fb661a69..09d892b3bf5d (2 commits) (#48938)

https://github.com/flutter/engine/compare/be20fb661a69...09d892b3bf5d

git log be20fb661a69..09d892b3bf5d --first-parent --oneline
2020-01-15 mouad.debbar@gmail.com [web] Freeze window.defaultRouteName (flutter/engine#15565)
2020-01-15 hterkelsen@users.noreply.github.com Upgrade to CanvasKit 0.11 (flutter/engine#15677)


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

-be20fb661a692b5dda886238fa4ce4f956080ed5
+09d892b3bf5d24a6d7b942586203cc57d226dbf1