$OpenBSD: patch-components_audio_modem_modem_impl_cc,v 1.1 2015/04/27 16:38:25 robert Exp $
--- components/audio_modem/modem_impl.cc.orig.port	Wed Apr 15 15:37:11 2015
+++ components/audio_modem/modem_impl.cc	Wed Apr 15 15:41:00 2015
@@ -8,6 +8,8 @@
 #include <limits>
 #include <vector>
 
+#include <math.h>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
