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This enables unit tests to run with Bluetooth permission,
by adding the Bluetooth permission to native_test.

Non-test applications will not have the Bluetooth permission,
and unit tests should also verify behavior
when the permission is not given. To enable this
createWithoutPermissionForTesting is added and
results in a state equivalent to when the permission
is not available.

Unit tests will be built in parallel for both when Bluetooth
permission exists and doesn't.

BUG=471536

Committed: https://crrev.com/30e81472dc168ea1c331a8779b3f6a14f684c54b
Cr-Commit-Position: refs/heads/master@{#329212}

Review URL: https://codereview.chromium.org/1129683002

Cr-Commit-Position: refs/heads/master@{#329286}