DO NOT MERGE. Initial commit for ExploreByTouchHelper class.

This helper class simplifies the implementation of accessibility in
custom views that would otherwise need AccessibilityNodeProvider. It
supports single-depth virtual view hierarchies and enforces guidelines
about what properties must be set on accessibility nodes and events.

Additional supporting code has been added to the ViewCompat and
ViewParentCompat.

Change-Id: If0d1f21bea5c187eecc54cac6c9e9bae96337d9b
5 files changed
tree: 1fbdfb7662562c25e72dc65d6ed93bb7f7822f87
  1. tests/
  2. v13/
  3. v4/
  4. v7/
  5. v8/
  6. CleanSpec.mk