25cfeb9ef1
Previously, it would be possible for the RTCStatsCollector to start an async network task to gather stats that would be run after the PeerConnection was closed when the transport controller was set to null. Bug: chromium:829238 Change-Id: I22fb4ce603caf2614814780b95b62127cee28284 Reviewed-on: https://webrtc-review.googlesource.com/72525 Reviewed-by: Henrik Boström <hbos@webrtc.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23046}