GitLab

removes the last directly promise-based usage of getUserMedia

BUG=836871

Change-Id: Ib0ef41b58c2fc3930d068d915cb569064db4542d
Reviewed-on: https://chromium-review.googlesource.com/1106618
Commit-Queue: Henrik Boström <hbos@chromium.org>
Reviewed-by: Henrik Boström <hbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570005}