All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=593604

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6KfvgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_5KMvQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_8uUuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6mluQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_7CSuQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggKCzuAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6LVtgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggODYtAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6uNtAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA__7asgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6nqsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_5SFsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6uosAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6KLrwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA__6BqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_8vAqgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggKClqQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_6n-qAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_4HdqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_63VpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggKDPpQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA__qPpQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA_8u3oQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggKCzuAkM


Bot(s) for this bug's original alert(s):

webrtc-android-tests-nexus5
webrtc-android-tests-nexus9
webrtc-linux-large-tests
webrtc-mac-large-tests
webrtc-win-large-tests

There is a regression in the webrtc_perf_tests media_bitrate/screenshare_slides_vp9_2sl

Reassigning to pbos@
Could you please have a look to see whether this could be related to https://codereview.webrtc.org/1780543003

Not related, the code isn't hit in those tests. marpan@ the suspect CL rolls a new libvpx from Chromium, can you take a look?

Suspect CL: https://chromium.googlesource.com/external/webrtc/+/7e749949776f9da58e8a1a8815eaa638c6510198

I added another triggered performance improvement of the same stat on nexus72 to this bug, which I think might be related.

Any update on this? Should we cc the author of the suspected CL in #5?

Graphs are improved from libvpx roll in chromium this week.