hbos cd195bea5e RTCInboundRTPStreamStats.qpSum collected.
This was previously only collected for local tracks
(RTCOutboundRTPStreamStats.qpSum).

Spec: https://w3c.github.io/webrtc-stats/#dom-rtcrtpstreamstats-qpsum

This CL also improves some testing in rtcstatscollector_unittest.cc.
Default and non-default values are tested in the same unittests,
removing the test that was specific to default-values, which was
otherwise code duplication.

BUG=webrtc:7065

Review-Url: https://codereview.webrtc.org/2675943002
Cr-Commit-Position: refs/heads/master@{#16477}
2017-02-07 16:31:27 +00:00
..
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