am c9535de8: Merge "Add OBB file helper class" into gingerbread

Merge commit 'c9535de8e398d766c95144f9a831f34b2cecfd91' into gingerbread-plus-aosp

* commit 'c9535de8e398d766c95144f9a831f34b2cecfd91':
  Add OBB file helper class