$OpenBSD: patch-ui_gl_sync_control_vsync_provider_cc,v 1.2 2015/10/14 16:42:07 robert Exp $
--- ui/gl/sync_control_vsync_provider.cc.orig.port	Wed Oct 14 07:58:41 2015
+++ ui/gl/sync_control_vsync_provider.cc	Wed Oct 14 07:58:56 2015
@@ -10,7 +10,7 @@
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_BSD)
 // These constants define a reasonable range for a calculated refresh interval.
 // Calculating refreshes out of this range will be considered a fatal error.
 const int64 kMinVsyncIntervalUs = base::Time::kMicrosecondsPerSecond / 400;
@@ -37,7 +37,7 @@ SyncControlVSyncProvider::~SyncControlVSyncProvider() 
 void SyncControlVSyncProvider::GetVSyncParameters(
     const UpdateVSyncCallback& callback) {
   TRACE_EVENT0("gpu", "SyncControlVSyncProvider::GetVSyncParameters");
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_BSD)
   base::TimeTicks timebase;
 
   // The actual clock used for the system time returned by glXGetSyncValuesOML
