Summary:
Developers are complaining about horrible lag (https://github.com/facebook/react-native/issues/11809) caused by PR https://github.com/facebook/react-native/pull/11222.
The issue was that hasNewLayout in yoga is actually a dirty bit and indicates that either you OR one of your children has a new layout. We still need to manually check whether the component's layout actually is different from before.
Reviewed By: sahrens
Differential Revision: D4597545
fbshipit-source-id: 27d4605afd00badfdcdacae740ee2e477adee929