Apparently WebSocketObserver gets garbage collected if it is not stored by us. This caused some external tests to break. Bug: None Change-Id: If62786e84f84a5a63172d67962bb4de8ae3e8479 Reviewed-on: https://webrtc-review.googlesource.com/16100 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20449}