BoostFramework: Trigger IOP at Displayed for duration.

Previous IOP triggers at the time of First Frame Draw are vanished because
of recent framework chages. Reintroduced them at different place.
Needed "Diplayed Activity Duration" for getting all time slots' Favorite Apps
from IOP, which are must needed in Prekill.

CRs-Fixed: 2408023

Change-Id: I63e1e69990be9ae74f621405d7d3208bb25e0a31