Roll engine a665c6fbd428..e20391a06196 (2 commits) (#37674)

git@github.com:flutter/engine.git/compare/a665c6fbd428...e20391a06196

git log a665c6fbd428..e20391a06196 --no-merges --oneline
2019-08-06 skia-flutter-autoroll@skia.org Roll src/third_party/skia eb0770211a6c..c409951bea4f (1 commits) (flutter/engine#10651)
2019-08-06 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from Gh0U-... to -YGXe... (flutter/engine#10650)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff (jimgraham@google.com), and stop
the roller if necessary.

bin/internal/engine.version

-a665c6fbd428115304b3501810f101190f81a2fc
+e20391a06196f250162f5b4482600c3855daaa74