Move mirror::Class to use ObjPtr

Leave the return types as non ObjPtr for now. Fixed moving GC bugs
in tests.

Test: test-art-host

Bug: 31113334

Change-Id: I5da1b5ac55dfbc5cc97a64be2c870ba9f512d9b0
diff --git a/runtime/interpreter/interpreter_switch_impl.cc b/runtime/interpreter/interpreter_switch_impl.cc
index 6cff1da..295cdec 100644
--- a/runtime/interpreter/interpreter_switch_impl.cc
+++ b/runtime/interpreter/interpreter_switch_impl.cc
@@ -20,6 +20,7 @@
 #include "experimental_flags.h"
 #include "interpreter_common.h"
 #include "jit/jit.h"
+#include "jvalue-inl.h"
 #include "safe_math.h"
 
 namespace art {