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This reverts commit 8cc4e50c and relands
812abd15 with iOS tests disabled.

R=rch@chromium.org

Change-Id: I56fb4be93602fcaa9deccdf9a1837ebcd787af11
Reviewed-on: https://chromium-review.googlesource.com/1154361Reviewed-by: Zhongyi Shi <zhongyi@chromium.org>
Commit-Queue: Victor Vasiliev <vasilvv@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579229}