tree 4969c58768952cae47a59119fd0f119a8db4b0f0
parent e939889135c37d11f3f1c6f58984f325aca680d7
author stuartmorgan <stuartmorgan@google.com> 1558386089 -0400
committer dart-luci-ci-builder <dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com> 1558386891 -0700

Fix horizontal scroll direction for macOS (#9022)

macOS uses negative values to represent scrolls to the right, while
Flutter expects the opposite, so flip X deltas.
https://dart.googlesource.com/external/github.com/flutter/engine/+/e1599ccd3f89943a11c89ac8a31cc7d3edd72073