Reason for revert: Fails on Chromium FYI bots. https://build.chromium.org/p/chromium.webrtc.fyi/builders/Linux%20Builder/builds/5392/ Original issue's description: > Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/ > > BUG=webrtc:5520 > > Committed: https://crrev.com/2c27a062ee46258abe9facc2cceee74f09bf6a99 > Cr-Commit-Position: refs/heads/master@{#12511} TBR=tommi@webrtc.org,kwiberg@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:5520 Review URL: https://codereview.webrtc.org/1924443002 Cr-Commit-Position: refs/heads/master@{#12513}