Revert "Workaround Mac align bug for observer_ and crit_."
Revert "Workaround Mac align bug for observer_ and crit_."

This reverts commit r8528 which should be safe after r8646.

BUG=
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/40249004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#8648}
git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@8648 4adac7df-926f-26a2-2b94-8c16560cd09d

ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc