Modify ActivityOptionsCompat

Modify ActivityOptionsCompat to use newer API implementations where
these are available.
Also add a static final field to AccessibilityNodeProviderCompat to make
it fully compatible with AccessibilityNodeProvider.
Both of the classes above can now serve as drop-in replacements for the
correspoding framework base classes.

Bug: 29093107
Change-Id: I7c38ee4b629bf276ebf5daec8f58a394ba149dce
6 files changed