Re-enable WebRTC datachannel telemetry test.

It looks like transferring 100 MB over 10s generates little enough
traces, so it isn't a problem.

Bug: chromium:726811
Change-Id: I8e6fde33ec7c33fab4a90924c1ca6b773bdf88e0
Reviewed-on: https://chromium-review.googlesource.com/552549
Reviewed-by: Ned Nguyen <[email protected]>
Commit-Queue: Edward Lesmes <[email protected]>
Cr-Commit-Position: refs/heads/master@{#483806}
1 file changed