Roll engine 11e3ade157db..ba1a303ae2d7 (2 commits) (#39265)

git@github.com:flutter/engine.git/compare/11e3ade157db...ba1a303ae2d7

git log 11e3ade157db..ba1a303ae2d7 --no-merges --oneline
2019-08-26 dkwingsmt@users.noreply.github.com Patch buttons for chromebook touchpad (flutter/engine#11420)
2019-08-26 amirh@users.noreply.github.com Skip empty platform view overlays. (flutter/engine#11427)


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 liyuqian@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

-11e3ade157dbe459c1fc83d773ad7db358a1e46b
+ba1a303ae2d7873135d415f36dee75ce8174a73a