$OpenBSD: patch-ui_gl_sync_control_vsync_provider_h,v 1.4 2017/10/28 07:36:01 robert Exp $
Index: ui/gl/sync_control_vsync_provider.h
--- ui/gl/sync_control_vsync_provider.h.orig
+++ ui/gl/sync_control_vsync_provider.h
@@ -24,7 +24,7 @@ class SyncControlVSyncProvider : public gfx::VSyncProv
   void GetVSyncParameters(const UpdateVSyncCallback& callback) override;
 
   static constexpr bool IsSupported() {
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_BSD)
     return true;
 #else
     return false;
@@ -39,7 +39,7 @@ class SyncControlVSyncProvider : public gfx::VSyncProv
   virtual bool GetMscRate(int32_t* numerator, int32_t* denominator) = 0;
 
  private:
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_BSD)
   base::TimeTicks last_timebase_;
   uint64_t last_media_stream_counter_ = 0;
   base::TimeDelta last_good_interval_;
