Henrik Kjellander 3fe372dbee Fix all -Wnon-virtual-dtor warnings.
This is needed to get the GN build going for several parts
of the code tree.

BUG=webrtc:3307
NOTRY=True
R=henrika@webrtc.org, nisse@webrtc.org

Review URL: https://codereview.webrtc.org/1928653005 .

Cr-Commit-Position: refs/heads/master@{#12693}
2016-05-12 06:11:09 +00:00
..