Add support for fallback transitions.

Authored by featherless on May 16 2017, 11:32 AM.


Add support for fallback transitions.

Summary: This new API allows transitions to fallback to other transition types in certain contexts. For example, a full-screen fab transition might choose to fall back to a modal slide transition when being dismissed.

Reviewers: O2 Material Motion, O4 Material Apple platform reviewers, Material Motion

Tags: Material Motion

Differential Revision:


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