Merge "Created new Task.h file to contain task classes." am: 166efb16 am:...

Merge "Created new Task.h file to contain task classes." am: 166efb16 am: b85df5f7 am: f96428e8

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2410952



Change-Id: I33c8775f11a26a77952740d2f332888303a95c3f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>