am aad0fcc9: Merge change 7783 into donut

Merge commit 'aad0fcc9619eb72c18a6afff48ebc9d4011f0f54'

* commit 'aad0fcc9619eb72c18a6afff48ebc9d4011f0f54':
  Add "nodpi" density, and expose a bunch of density-related APIs.