DO NOT MERGE ANYWHERE: UsageStats: Use new settings key idle_duration2 for app idle am: 1559fed4c4  -s ours
am: 5c9378f310  -s ours

* commit '5c9378f310acd4ab375ed8a5d703a86522ab814c':
  DO NOT MERGE ANYWHERE: UsageStats: Use new settings key idle_duration2 for app idle