All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=704490

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzJ-XtwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrNS0pgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrOLLpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrLCrrgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrLC19woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzOKvrAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgrOT-yQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzMaG7wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzO_RpAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzIO_rQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzObwiwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzPvFrQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzIj04QoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzLT69wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzMbctgsM


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

webrtc-android-tests-nexus4-lollipop
webrtc-android-tests-nexus5-kitkat
webrtc-android-tests-nexus6-lollipop
webrtc-android-tests-nexus6-nougat
webrtc-android-tests-nexus72
webrtc-linux-large-tests
webrtc-mac-large-tests

Caused by my cl https://chromium.googlesource.com/external/webrtc/+/c8b0865a2e52dcdfb70bd4e344893bae5c5d0aa1 that greatly reduce the time it takes to generate a new frame in the frame generator. The frame rate goes up and CPU usage down.