Have GrSurfaceProxys and GrGpuResources draw from the same pool of unique ids

include/gpu/GrGpuResource.h

Index: include/gpu/GrGpuResource.h
diff --git a/include/gpu/GrGpuResource.h b/include/gpu/GrGpuResource.h
index fb7cb8c94dd84a4770594ff6604899ad2093ee85..c81a02f690ea2ae9ef2376e6b7dd795e91c112d5 100644
--- a/include/gpu/GrGpuResource.h
+++ b/include/gpu/GrGpuResource.h
@@ -279,6 +279,7 @@ private:
 #ifdef SK_DEBUG
     friend class GrGpu; // for assert in GrGpu to access getGpu
 #endif
+    friend class GrSurfaceProxy; // for access to CreateUniqueID

[bsalomon, 2016/08/31 17:53:18]

Is there a lighter weight way we could do this? I think I'd prefer making
CreateUniqueID() public to friending.

[robertphillips, 2016/08/31 19:11:38]

Done. Made it public.

 
     static uint32_t CreateUniqueID();