ObjPtr<>-ify mirror::ObjectArray.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 31113334
Change-Id: I611b3e49d3feed306f6cd35d2b662a1e727e24c6
diff --git a/runtime/debugger.h b/runtime/debugger.h
index 33444f8..1dbf8be 100644
--- a/runtime/debugger.h
+++ b/runtime/debugger.h
@@ -709,7 +709,8 @@
     return gRegistry;
   }
 
-  static JDWP::JdwpTag TagFromObject(const ScopedObjectAccessUnchecked& soa, mirror::Object* o)
+  static JDWP::JdwpTag TagFromObject(const ScopedObjectAccessUnchecked& soa,
+                                     ObjPtr<mirror::Object> o)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
   static JDWP::JdwpTypeTag GetTypeTag(ObjPtr<mirror::Class> klass)