b3038ec7cf
It is beneficial that there is a mechanism on the platform to notify applications whether it is safe to perform somehow expensive operations while the user is not using the device. Thus, user experience will not be degraded. An example is discarding of unused blocks on a mounted file system instead of doing this on every write operation. bug:8056794 Change-Id: I708bad9d3ce6c8f1d5a1c05c0abf46f81a3d464b