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Other test suites, e.g. HostedAppTest, need to check the security state
of a tab.

Change-Id: If6c5314d6878b73898011d18e8c5e18ea51b3a8b
Reviewed-on: https://chromium-review.googlesource.com/958946
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543961}