tree 34407c845b53947ac87ac16fdc02f2fa85619b68
parent 05fe90c10b54111a742187935f2890029b348bf5
author Amith Yamasani <yamasani@google.com> 1431128181 -0700
committer Amith Yamasani <yamasani@google.com> 1431542975 -0700

Track app idle history and dump it

"dumpsys usagestats history" will show the
active state of each app for the last 100 hours,
if the device hasn't rebooted.

Bug: 20066058
Change-Id: I703e5bc121298e4363c202da56fffb0b8534bcaf