$OpenBSD: patch-content_browser_power_usage_monitor_impl_cc,v 1.3 2016/03/23 20:13:07 robert Exp $
--- content/browser/power_usage_monitor_impl.cc.orig.port	Wed Feb 24 00:02:00 2016
+++ content/browser/power_usage_monitor_impl.cc	Thu Mar  3 09:43:26 2016
@@ -21,6 +21,8 @@
 #include "content/public/browser/power_usage_monitor.h"
 #include "content/public/browser/render_process_host.h"
 
+#include <math.h>
+
 namespace content {
 
 namespace {
