GitLab

This CL adds iso MediaTrackCapabilities.

Bug: b:151048287
Test: Tested on kukui.
Change-Id: Icf05d4666f5d6fbe31f1cb768730c9f7e5444a0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2374467Reviewed-by: Wei Lee <wtlee@chromium.org>
Commit-Queue: Hsu Wei-Cheng <mojahsu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#839078}