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This is a reland of 142274a8 with a fix
for DiceBrowserTest.EnableSyncAfterToken. Original change's info:
> Bug: 1015293
> Change-Id: Ic76e7911403a925fa46a5b5fc58eca95fa292269
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2209392
> Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
> Reviewed-by: Lei Zhang <thestig@chromium.org>
> Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
> Auto-Submit: Esmael Elmoslimany <aee@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#771116}

Bug: 1015293, 1085540
Change-Id: Ifad9f0583ef0f5ec82b20068bd186b923d4e4eaa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2216325Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Auto-Submit: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772253}