ART: Add class-alloc-inl.h

In an effort to reduce the (transitive) proliferation of heap-inl
add a specific inline header for class instance allocation.

Bug: 118385392
Test: mmma art
Test: m test-art-host
Change-Id: I32529f0221a836452c58687330a91ac0d5fde162
diff --git a/runtime/reference_table_test.cc b/runtime/reference_table_test.cc
index 3ea1714..2acb2c7 100644
--- a/runtime/reference_table_test.cc
+++ b/runtime/reference_table_test.cc
@@ -27,6 +27,7 @@
 #include "handle_scope-inl.h"
 #include "mirror/array-inl.h"
 #include "mirror/array-alloc-inl.h"
+#include "mirror/class-alloc-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/string.h"