tree 2c4a81b25f46a58b18775ad1f653d30207409619
parent 28c1bf3e834a8395ae761f5a59fcc96158bb54c4
author wub <wub@google.com> 1566240895 -0700
committer Copybara-Service <copybara-worker@google.com> 1566263306 -0700

gfe-relnote: (n/a) Ensure BandwidthSampler.max_ack_height_tracker_.aggregation_epoch_start_time_ is initialized before Update(). Protected by --gfe2_reloadable_flag_quic_track_ack_height_in_bandwidth_sampler2, which replaces the old v1 flag.

This fixes b/139652317. Without the initialization, (ack_time - aggregation_epoch_start_time_) at http://shortn/_NUjGL3bG9a can be a very large number, which cause signed integer overflow when multiplied with bandwidth.

PiperOrigin-RevId: 264208119
Change-Id: Ibc6e5c81127f155d72f573781c81bc07db0a33f8