All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=648929

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-e_-ogoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghd2X9wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghcWYsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghZD--QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-eeWuAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghfjFpgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghZmf7woM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghYWPowkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-e2X8ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgheifpQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-e-lswoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-eON5ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghZiEtAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghcasogkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghcX8qwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-aLInwgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-Y-OpQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg-euKrwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICghf2nqwoM


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

webrtc-mac-large-tests

Added a few similar alerts to this bug even though they seem to blame commit #14307 rather than #14306.

This seems to mostly be an issue with the fact that we now require 20 packets to be reported as received by the receiver before we start increasing the loss-based BWE. It only affects the regular ramp-up and not ramp-up by bitrate probing, and isn't terrible, so I think we can close as WAI.