The filter is currently being set and read by a number of threads and tripping up tsan. Original review: https://webrtc-codereview.appspot.com/47609004/ R=mflodman@webrtc.org Review URL: https://webrtc-codereview.appspot.com/47659004 Cr-Commit-Position: refs/heads/master@{#8789} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8789 4adac7df-926f-26a2-2b94-8c16560cd09d