tree eb142b80610f473197e284f372784c25f04a4f3b
parent df464dbe79202b62f8b2cf73f45e52d9f32e5e5e
author Tao Bao <tbao@google.com> 1486500660 -0800
committer Tao Bao <tbao@google.com> 1486775115 -0800

minui: Move graphics_{adf,drm,fbdev} into classes.

This CL defines minui_backend as an interface, and expresses the three
backends (adf, drm and fbdev) as subclasses to the interface.

Test: 'Run graphics test' on N9, Pixel C and N5X.
Change-Id: I0e23951c7b2e2ff918957a8d9fc8b0085b6e5952