Accessing this method from the test thread is illegal, but doesn't always fail. Bug: webrtc:8524 Change-Id: Ie0e84cc2fb63268fb6d7cbf0c3a58cb35312c16b Reviewed-on: https://webrtc-review.googlesource.com/49061 Reviewed-by: Sergey Silkin <ssilkin@webrtc.org> Commit-Queue: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21930}