ART: Use array-inl.h in reference_table_test

The test allocates arrays, which is an inline definition.

(cherry picked from commit 8db4c882a8d1996852163ebec966c8b4eb1e00df)

Change-Id: I1423c5419949d7c352ed0e614d4f9c5920831deb
diff --git a/runtime/reference_table_test.cc b/runtime/reference_table_test.cc
index 3229039..db98e1f 100644
--- a/runtime/reference_table_test.cc
+++ b/runtime/reference_table_test.cc
@@ -17,6 +17,10 @@
 #include "reference_table.h"
 
 #include "common_runtime_test.h"
+#include "mirror/array-inl.h"
+#include "mirror/string.h"
+#include "scoped_thread_state_change.h"
+#include "thread-inl.h"
 
 namespace art {