Trying to re-enable WebRTC browser test on win and CrOS.
Trying to re-enable WebRTC browser test on win and CrOS.

There's been a bunch of bug fixes and stability fixes, so let's hope
the tests are alright now (they don't fail locally at least).

BUG=443542

Review URL: https://codereview.chromium.org/1316363003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#346381}

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