All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=642699

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwe_M7AgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoeWmogkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwdWBvwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwaOTrAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwYe6vgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoY6NsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_vDPzQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoeOJqQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgobG2uAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwcnZsQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoYCNqgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwfuDugoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwdWLsAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwe-vuwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoZWApgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwfuZqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwdWVoQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwayy-wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoZqTuwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgobj4qAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoYS7pQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwcmX-QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoZqPpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoYDruwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwem9_woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwcnDqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwfvOsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwcmuoAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwcuQ_wkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwbWipQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoZrgrAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoYCRswoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwceEpAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwf3HuAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgoezovAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgwdXargoM


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

webrtc-android-tests-nexus5

There are many improvements in video-related perf stats on nexus 5 that I cannot explain based on the surrounding CLs. Magnus, could you have a look at this to see if you can understand what's causing these changes?