GitLab

Allows FakeBluetoothChooser to set the test scan duration to never
timeout.

BUG=719827

Change-Id: I38c74a1bbb0de026edb7d578b98258941d0c3349
Reviewed-on: https://chromium-review.googlesource.com/961544Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Commit-Queue: Ovidio Henriquez <odejesush@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545105}