Tidy up memory barriers.

Change-Id: I937ea93e6df1835ecfe2d4bb7d84c24fe7fc097b
diff --git a/runtime/mirror/object.cc b/runtime/mirror/object.cc
index 008a173..bdb3250 100644
--- a/runtime/mirror/object.cc
+++ b/runtime/mirror/object.cc
@@ -89,10 +89,10 @@
   static AtomicInteger seed(987654321 + std::time(nullptr));
   int32_t expected_value, new_value;
   do {
-    expected_value = static_cast<uint32_t>(seed.load());
+    expected_value = static_cast<uint32_t>(seed.Load());
     new_value = expected_value * 1103515245 + 12345;
   } while ((expected_value & LockWord::kHashMask) == 0 ||
-      !seed.compare_and_swap(expected_value, new_value));
+      !seed.CompareAndSwap(expected_value, new_value));
   return expected_value & LockWord::kHashMask;
 }