tree be57cc6559c777d04c54dae2e3c0f17601ed6b97
parent 0283d44c0856499b5aabc3212487a44d6f4b2f63
author Alan Viverette <alanv@google.com> 1447771631 -0500
committer Alan Viverette <alanv@google.com> 1447771705 -0500

APIs for querying and controlling display magnification

Also separates magnification state and touch event handling. Moves
callbacks for window manager changes and display state changes into
the magnification controller.

Bug: 22718911
Change-Id: I3a8ba060a07d8f1f51856855a5f85601766fd45d