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In some case there are aliases to a node being inserted into a rankings
chain already in-memory (e.g. due to an iterator active while an entry
is being moved between different eviction list), but Ranking::Insert
failed to update them, making things confused. Fix that.

Bug: 1156288
Change-Id: I1a1bd5fb7aedf5ee6e45071606825b266e5e3b9c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639218Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Commit-Queue: Maksim Orlovich <morlovich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846408}