The core of the implementation is complete and provides heuristic
cache sizing based on the size of the surface being used. This CL
will also be used to add the following features in the future...
1) Support Vulkan pipeline reporting on the size of the surface.
2) Complete the VectorDrawableAtlas stub code
3) Automatic purging of stale resources for low memory devices.
Test: hwui_unit_tests (new test added) and CtsUiRendering
Bug: 62260637
Change-Id: Ib85159cca28b646fe249f2190b07f1b7e0f50d8f
f9e45d1d81