Omit OatMethodOffsets for classes without compiled code

Change-Id: If0d290f4aebc778ff12d8fed017c270ad2ac3220
diff --git a/compiler/utils/dedupe_set.h b/compiler/utils/dedupe_set.h
index 53c1afa..638e0ec 100644
--- a/compiler/utils/dedupe_set.h
+++ b/compiler/utils/dedupe_set.h
@@ -22,6 +22,7 @@
 
 #include "base/mutex.h"
 #include "base/stl_util.h"
+#include "base/stringprintf.h"
 
 namespace art {