$OpenBSD: patch-third_party_WebKit_Source_platform_heap_ThreadState_cpp,v 1.17 2017/03/14 12:18:54 robert Exp $
--- third_party/WebKit/Source/platform/heap/ThreadState.cpp.orig.port	Thu Mar  9 21:04:46 2017
+++ third_party/WebKit/Source/platform/heap/ThreadState.cpp	Fri Mar 10 07:46:25 2017
@@ -68,7 +68,7 @@
 #include <sanitizer/msan_interface.h>
 #endif
 
-#if OS(FREEBSD)
+#if OS(FREEBSD) || OS(OPENBSD)
 #include <pthread_np.h>
 #endif
 
