tree ebf84e68c2857c55b688505750210dccce8b482f
parent cb7772bb263b35b2bc6047addfbdfa62599409a0
author Mark Lobodzinski <mark@lunarg.com> 1519850325 -0700
committer Mike Schuchardt <mikes@lunarg.com> 1520628871 -0700

layers: Make unique_objects ID map global

Increasingly, instance objects are referenced by device-level APIs.
Made unique ID map global, shared across all instances and devices.

Change-Id: I5b62e7b95ec25a2a8b390d46024b43c29f2199ce