Roll engine edee1fea5850..ef2a452124dc (2 commits) (#39942)

git@github.com:flutter/engine.git/compare/edee1fea5850...ef2a452124dc

git log edee1fea5850..ef2a452124dc --no-merges --oneline
2019-09-05 matthew-carroll@users.noreply.github.com Remove un-needed FragmentActivity import statements to facilitate proguard. (flutter/engine#11902)
2019-09-05 dnfield@google.com LTO fuchsia binaries (flutter/engine#11883)


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 franciscojma@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

-edee1fea585002935a6203d33a278bfec18aeb0a
+ef2a452124dc99895e95d97017df012d2e3bef66