Corresponding mock class is deleted rather than updated, since it appears unused. Bug: webrtc:8422 Change-Id: If1c6c5ed73abff0d2545e8666c4bb8b63ee5b53f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/13862 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29505}