tree d296faceac4111ea2bb745e72964ba109db81f13
parent 9f8409338697b52389b7e8bd0f2bcb7ea49ba667
author Charlie Wang <charliewang@google.com> 1498516203 -0700
committer Charlie Wang <charliewang@google.com> 1498585869 -0700

Adding fields for time elapsed for headset device events.

Headset plug and don/doff events need to have their session times
logged.

Bug: 38431760
Test: Builds
Change-Id: Ia0ea814b8a08169b6e4c566be75e249af8c392a7