Refactor to separate backend object lifecycle and GpuResource budget decision

include/gpu/GrTypes.h

Index: include/gpu/GrTypes.h
diff --git a/include/gpu/GrTypes.h b/include/gpu/GrTypes.h
index 902594522d87ddf0f25ec5671e3c870c565fd53e..d739bf7594b8cceb64dc6b4ec4551968c14182a1 100644
--- a/include/gpu/GrTypes.h
+++ b/include/gpu/GrTypes.h
@@ -425,6 +425,13 @@ GR_MAKE_BITFIELD_OPS(GrSurfaceFlags)
 // opaque type for 3D API object handles
 typedef intptr_t GrBackendObject;
 
+enum class GrBackendObjectOwnership : bool {

[Kimmo Kinnunen, 2016/04/20 13:59:03]

I guess now this is quite similar to below..

[bsalomon, 2016/04/20 15:48:03]

Looking at the latest CL I think it makes sense to keep it separate. However,
can it be moved to GrGpuResource.h or GrTypesPriv.h?

+    /** Holder does not destroy the backend object. */
+    kBorrowed = false,
+    /** Holder destroys the backend object. */
+    kOwned = true
+};
+
 /**
  * Some textures will be stored such that the upper and left edges of the content meet at the
  * the origin (in texture coord space) and for other textures the lower and left edges meet at