GitLab

This CL adds animations when carousels chips are changed. When setting
the new list of chips, we compute the minimum set of operations (insert,
delete, substitute) required to transform the old list into the new one
(also known as Levenshtein Distance) and we apply those operations.

Animations themselves are automatically added by the RecyclerView
containing the chips.

Videos:
 - Before: http://go/aa-carousel-before
 - After: http://go/aa-carousel-after

Change-Id: Iaaf78e3a8280fead319dea338bd2a0eb5042aff6
Reviewed-on: https://chromium-review.googlesource.com/c/1491618
Commit-Queue: Jordan Demeulenaere <jdemeulenaere@chromium.org>
Reviewed-by: Stephane Zermatten <szermatt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636769}