This reverts commit 9509fbfc301dd5412804ce5731afedc81480f2f8. This is to debug a Chromium issue that WebRTC hangs if there is > 1 PeerConnection active in the browser on Win XP. BUG= TBR=tommi@webrtc.org Review URL: https://webrtc-codereview.appspot.com/43019004 Cr-Commit-Position: refs/heads/master@{#8912}