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This is a reland of 19619799

Original change's description:
> [iOS] Roll MDC to dc9529ad1077730cb7a57b05b77c9260d027b6d4
> 
> Bug: 1034144
> Change-Id: I8f69bae933c264839a60f4ce7c9cb6ac04249895
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2003391
> Commit-Queue: Kurt Horimoto <kkhorimoto@chromium.org>
> Reviewed-by: Eugene But <eugenebut@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#732628}

Bug: 1034144
Change-Id: I5d8888ab30a9ae60018f547808575588d0ccb6bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2007628Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732843}