DO NOT MERGE ANYWHERE: UsageStatsService: Fix app idle issue at rollover time am: 9c7b543325  -s ours am: 7e03454985  -s ours
am: 78a2522c7f  -s ours

* commit '78a2522c7f02570f36a3683a9ba5cfa813abc26e':
  DO NOT MERGE ANYWHERE: UsageStatsService: Fix app idle issue at rollover time