GitLab

Added following tests covering -
* indicators when their respective devices become in-use. Since this feature
  depends on hardware/system capability, all except location permission test
  have been commented by an '#if 0'
* indicators displaying the permissions already granted. This is not dependent
  on hardware/system, and so, testable on any machine. A few permutations of
  {allow, block, ask} are applied to {microphone, camera, location} permissions

Things to explore/add are -
* to try and run the second category of tests on all
possible permutations
* add bluetooth, midi, usb and screen capture to the above mix
* add tests involving external prompt, timeout spinner UI and indicators

Bug: 908925
Change-Id: Ide7e03716d9992372991fc2c66354e8276189182
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1555356
Commit-Queue: Suman Kancherla <sumankancherla@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Bill Orr <billorr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649332}