diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/ExtensionBehavior.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/ExtensionBehavior.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#ifndef _EXTENSION_BEHAVIOR_INCLUDED_
+#define _EXTENSION_BEHAVIOR_INCLUDED_
+
+#include <map>
+#include <string>
+
+typedef enum
+{
+    EBhRequire,
+    EBhEnable,
+    EBhWarn,
+    EBhDisable,
+    EBhUndefined
+} TBehavior;
+
+inline const char* getBehaviorString(TBehavior b)
+{
+    switch(b)
+    {
+      case EBhRequire: return "require";
+      case EBhEnable: return "enable";
+      case EBhWarn: return "warn";
+      case EBhDisable: return "disable";
+      default: return NULL;
+    }
+}
+
+// Mapping between extension name and behavior.
+typedef std::map<std::string, TBehavior> TExtensionBehavior;
+
+#endif // _EXTENSION_TABLE_INCLUDED_