Revert due to crbug/609816. Investigation is ongoing. This reverts commit 28a44564c93b12839618dc0da2e2541ec6a0db23. (https://codereview.webrtc.org/1947873002/) TBR=stefan@webrtc.org, ivoc@webrtc.org, BUG=609816, webrtc:5687 Review-Url: https://codereview.webrtc.org/1958053002 Cr-Commit-Position: refs/heads/master@{#12663}