Valentin Shergin 1068da2ec7 Introducing LayoutableShadowNode::isLayoutOnly and (theoretical) view-flattening
Summary:
@public
Voalá, this small change actually implements view flattening. Obviously, it does not work right now because there are no `ShadowNode` classes which implement `isLayoutOnly`.
Surprisingly, correct implementing of `isLayoutOnly` is quite tricky, we will work on this in coming diffs.

Reviewed By: mdvacca

Differential Revision: D9403565

fbshipit-source-id: 1f16f912cb5c6841405a1fc3cf36aec28698c11f
2018-09-03 23:04:20 -07:00
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2018-08-31 18:03:07 -07:00