Insert an empty read barrier call.

Bug: 12687968
Change-Id: Ie1d28658e16e09f6a983cb5c1f0d5b375b7ae069
diff --git a/runtime/mirror/object.h b/runtime/mirror/object.h
index 1ac23ce..f652202 100644
--- a/runtime/mirror/object.h
+++ b/runtime/mirror/object.h
@@ -185,7 +185,7 @@
   bool IsPhantomReferenceInstance() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   // Accessor for Java type fields.
-  template<class T, VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags>
+  template<class T, VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, bool kDoReadBarrier = true>
   T* GetFieldObject(MemberOffset field_offset, bool is_volatile)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   template<bool kTransactionActive, bool kCheckTransaction = true,