Workaround Mac align bug for observer_ and crit_.

Unblocks rolling WebRTC into Chromium so we can debug what's actually
going on.

BUG=
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/39329004

Cr-Commit-Position: refs/heads/master@{#8528}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8528 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed