tree 896485f58f470b56846d51e90899d629d83cf60c
parent 5dd7513d377ccb7262c309b469bd534f559d44b3
author Denton Gentry <dgentry@google.com> 1446260343 -0700
committer Denton Gentry <dgentry@google.com> 1446560180 -0800

Fix netusage underflow due to race condition.

Also add a unit test.

Change-Id: Ia00df67444f3dcf8dc0de4c3ff131872bea8deef