hbos df6075a77f RTCStatsCollector: Utilize network thread to minimize thread hops.
(This is a re-upload of https://codereview.webrtc.org/2567243003/, the
CQ stopped working there.)

The previously used WebRtcSession::GetTransportStats did a synchronous
invoke per channel (voice, video, data) on the signaling thread to the
network thread - e.g. 3 blocking invokes.

It is replaced by WebRtcSession::GetStats[_s] which can be invoked on
the signaling thread or on any thread if a ChannelNamePairs argument is
present (provided by WebRtcSession::GetChannelNamePairs on the signaling
thread).

With these changes, and changes allowing the getting of certificates
from any thread, the RTCStatsCollector can turn the 3 blocking thread
invokes into 1 non-blocking invoke.

BUG=webrtc:6875, chromium:627816

Review-Url: https://codereview.webrtc.org/2583883002
Cr-Commit-Position: refs/heads/master@{#15672}
2016-12-19 12:58:02 +00:00
..
2016-09-29 11:12:51 +00:00
2016-12-18 21:14:50 +00:00
2015-11-16 19:02:02 +00:00
2016-12-09 14:54:08 +00:00

Name: WebRTC
URL: http://www.webrtc.org
Version: 90
License: BSD
License File: LICENSE

Description:
WebRTC provides real time voice and video processing
functionality to enable the implementation of 
PeerConnection/MediaStream.

Third party code used in this project is described 
in the file LICENSE_THIRD_PARTY.