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Previously, you were able to do an escape via tabs.create api. Now it
is not possible.

Bug: 1024244
Change-Id: Ic81c202891cd504f08678db3bbf42b4a5ae1a28d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1914360
Commit-Queue: Anatoliy Potapchuk <apotapchuk@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#719863}