resolve merge conflicts of "Add API to notify the system_server when app is blocked on I/O" to master Change-Id: Ie7a7be2a5b8557a2cdd3fbc1a6a37622b29535be
resolve merge conflicts of "Add API to notify the system_server when app is blocked on I/O" to master Change-Id: Ie7a7be2a5b8557a2cdd3fbc1a6a37622b29535be