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The WebRTC change has rolled in that these 2 tests were disabled for.
One is being re-enabled and updated to pass, while the other is being
removed because it is no longer relevant.

Bug: webrtc:7932, webrtc:7933
Change-Id: Ia0a9f61997a1640c37fdc8e632f28543169b2161
Reviewed-on: https://chromium-review.googlesource.com/995961Reviewed-by: Henrik Boström <hbos@chromium.org>
Commit-Queue: Henrik Boström <hbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548726}