Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
diff --git a/runtime/mirror/reference-inl.h b/runtime/mirror/reference-inl.h
index d1d2a3a..01e99b9 100644
--- a/runtime/mirror/reference-inl.h
+++ b/runtime/mirror/reference-inl.h
@@ -22,9 +22,9 @@
 namespace art {
 namespace mirror {
 
-inline uint32_t Reference::ClassSize() {
+inline uint32_t Reference::ClassSize(size_t pointer_size) {
   uint32_t vtable_entries = Object::kVTableLength + 5;
-  return Class::ComputeClassSize(false, vtable_entries, 2, 0, 0, 0, 0);
+  return Class::ComputeClassSize(false, vtable_entries, 2, 0, 0, 0, 0, pointer_size);
 }
 
 inline bool Reference::IsEnqueuable() {