tree 9fe0d52848f824b84388a41fcaa891397b1a4e94
parent a37278b0a6ce94f06fd403155e17b7d42606741b
author Amith Yamasani <yamasani@google.com> 1454551326 -0800
committer Amith Yamasani <yamasani@google.com> 1454701109 -0800

Rewrite app standby stats

Don't mix up with usage stats. Keep a separate db and history
based on elapsed time and screen on time.

Unit tests for AppIdleHistory class.

Bug: 26989006
Change-Id: If343785b46da1db67f7c1c1263854c2732a232c6