tree 9f11ec72ca08b97e524aeb0e84f66758bcdbee23
parent 287d5dc618f2067fdadc82502cb1b6b72f4b3f8b
author Tao Bao <tbao@google.com> 1540969231 -0700
committer Tao Bao <tbao@google.com> 1541042909 -0700

minui: Refactor GRSurfaceFbdev.

- Adds Create() that returns a GRSurfaceFbdev instance.
- Moves away from using the copy ctor (precisely assignment operator) of
  GRSurfaceFbdev.
- Moves the GRSurfaceFbdev deallocation code into GRSurfaceFbdev's dtor.
- Manages MinuiBackendFbdev::gr_framebuffer with std::unique_ptr.

Test: mmma -j bootable/recovery
Test: `Run graphics test` on taimen.
Change-Id: I8e67cda7bc3a2feec0790124d035caa36fb58a89