base

Inflate fragments from layout into child FragmentManagers

Previously, if an app inflated a layout in a Fragment's onCreateView
that itself had fragments included, those fragments would be added to
the Activity-level FragmentManager and would not share the same
lifecycle with the fragment it was inflated for. This led to some
nasty management headaches.

If an app targets L or above, add the fragment to the child
FragmentManager of the current fragment when inflated using the
LayoutInflater passed to the parent fragment.

Bug 12763389

Change-Id: Iad4ed7d5df602aea9579bf1503e206fa894630c1