All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=725812

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2ou9qQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2ou9qQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-uDXuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgusvfsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvCCqwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-pCctwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvLZngoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguprg-wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgutSk9AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-pDIpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2rXdlwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2oOahgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguueZoAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-sKIqgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurrjtgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-qTCswoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg-qDN-QgM


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

webrtc-android-tests-nexus72
webrtc-linux-large-tests
webrtc-win-large-tests

Some of these changes were expected, others not. After landing https://codereview.webrtc.org/2911243002/ the unexpected ones look much better however. Gonna close that as fixed.
There are also some minor VP9 changes in here that has nothing to do with my CL.

Added one more graph related to this.