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/reflection-inl.h b/runtime/reflection-inl.h
index 52cdfb8..c4d4fae 100644
--- a/runtime/reflection-inl.h
+++ b/runtime/reflection-inl.h
@@ -21,7 +21,7 @@
 
 #include "base/stringprintf.h"
 #include "common_throws.h"
-#include "jvalue.h"
+#include "jvalue-inl.h"
 #include "mirror/object-inl.h"
 #include "obj_ptr-inl.h"
 #include "primitive.h"