Reason for revert: The downstream problem is now fixed, and this should be good to land again. Original issue's description: > Revert of APM: Change 3 UMA metrics to fewer but linearly distributed buckets (patchset #2 id:20001 of https://codereview.webrtc.org/2547593002/ ) > > Reason for revert: > Breaks down-stream dependencies. > > Original issue's description: > > APM: Change 3 UMA metrics to fewer but linearly distributed buckets > > > > In this change WebRTC.Audio.ApmCaptureInputLevel{Average,Peak} are > > changed to 64 buckets, while WebRTC.Audio.AgcLevel is changed to 50 > > buckets. All three are changed to have linear spacing between buckets. > > > > Also, the metrics are renamed to avoid stats conflicts because of different bucket schemes: > > - WebRTC.Audio.AgcLevel -> WebRTC.Audio.AgcSetLevel > > - WebRTC.Audio.ApmCaptureInputLevelAverage -> WebRTC.Audio.ApmCaptureInputLevelAverageRms > > - WebRTC.Audio.ApmCaptureInputLevelPeakRms -> WebRTC.Audio.ApmCaptureInputLevelPeakRms > > > > BUG=webrtc:6622 > > CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng > > > > Committed: https://crrev.com/49715fe3be17d8579586d5bc954d626126d53415 > > Cr-Commit-Position: refs/heads/master@{#15418} > > TBR=peah@webrtc.org,rkaplow@chromium.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=webrtc:6622 > > Committed: https://crrev.com/63407a9b6ae6f3fc096e01d64e46c6d21d86b517 > Cr-Commit-Position: refs/heads/master@{#15420} TBR=peah@webrtc.org,rkaplow@chromium.org BUG=webrtc:6622 CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng Review-Url: https://codereview.webrtc.org/2551863003 Cr-Commit-Position: refs/heads/master@{#15442}