Add new histograms
WebRTC.Video.DecodeTimePerFrameInMs.[codec].[resolution].[decoder]
These histograms are more explicit than the existing histogram
WebRTC.VideoDecodTimeMs, since they allow to see performance per
codec/resolution/decoder and also contain per frame statistics instead
of an average decode time.
There's a killswitch, WebRTC-DecodeTimeHistogramsKillSwitch, that can be
used to disable the histograms.
Bug: chromium:1007526
Change-Id: I9f75127b4bc5341e9f406c64ed91164564290b26
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/157881
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29572}
e76b3abf61