am 308e6989: am 24d7050c: Merge "don\'t handle the transparent region of a layer in draw()" into gingerbread

Merge commit '308e69896c2812953d74ea63fe964bebaa68eef4'

* commit '308e69896c2812953d74ea63fe964bebaa68eef4':
  don't handle the transparent region of a layer in draw()