tree 99a8cbac342d7b00b867b3b0b7d5304daaed5f91
parent 3c5d179ab3c1e8c41ef98ca491e7458acd1bcdf1
author tsaichristine <tsaichristine@google.com> 1578516132 -0800
committer tsaichristine <tsaichristine@google.com> 1578522043 -0800

Key DurationMetric trackers directly to dimensions_in_what keys

State keys will be stored in DurationTrackers, so we do not need to map
the what key to a map of state key, Duration Tracker pairs.

Test: bit statsd_test:*
Change-Id: I57fe5cd48263a85b024de03d5fb87a6e2160e94a