brillo: Compare audio signals for the recording test.
Allow the audio recording test to compare the recorded audio to what was
produced on the device so see if they are the same.
BUG=b:25803625
TEST=test_droid.py suite:brillo-audio passes
Change-Id: I7e416b687992dc08fcce538febe5250cbd117fac
Reviewed-on: https://chromium-review.googlesource.com/327090
Commit-Ready: Ralph Nathan <ralphnathan@chromium.org>
Tested-by: Ralph Nathan <ralphnathan@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
4 files changed