diff -r 000000000000 -r 6474c204b198 gfx/angle/src/compiler/timing/RestrictVertexShaderTiming.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/compiler/timing/RestrictVertexShaderTiming.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+//
+// Copyright (c) 2012 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 COMPILER_TIMING_RESTRICT_VERTEX_SHADER_TIMING_H_
+#define COMPILER_TIMING_RESTRICT_VERTEX_SHADER_TIMING_H_
+
+#include "GLSLANG/ShaderLang.h"
+
+#include "compiler/intermediate.h"
+#include "compiler/InfoSink.h"
+
+class TInfoSinkBase;
+
+class RestrictVertexShaderTiming : public TIntermTraverser {
+public:
+    RestrictVertexShaderTiming(TInfoSinkBase& sink)
+        : TIntermTraverser(true, false, false)
+        , mSink(sink)
+        , mNumErrors(0) {}
+
+    void enforceRestrictions(TIntermNode* root) { root->traverse(this); }
+    int numErrors() { return mNumErrors; }
+
+    virtual void visitSymbol(TIntermSymbol*);
+private:
+    TInfoSinkBase& mSink;
+    int mNumErrors;
+};
+
+#endif  // COMPILER_TIMING_RESTRICT_VERTEX_SHADER_TIMING_H_