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diff --git a/chromium/third_party/angle/samples/angle/sample_util/Matrix.h b/chromium/third_party/angle/samples/angle/sample_util/Matrix.h
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index 00000000000..c482c52a106
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+++ b/chromium/third_party/angle/samples/angle/sample_util/Matrix.h
@@ -0,0 +1,46 @@
+//
+// Copyright (c) 2014 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 SAMPLE_UTIL_MATRIX_H
+#define SAMPLE_UTIL_MATRIX_H
+
+#include "Vector.h"
+
+struct Matrix4
+{
+    float data[16];
+
+    Matrix4();
+    Matrix4(float m00, float m01, float m02, float m03,
+            float m10, float m11, float m12, float m13,
+            float m20, float m21, float m22, float m23,
+            float m30, float m31, float m32, float m33);
+
+    static Matrix4 identity();
+    static Matrix4 rotate(float angle, const Vector3 &p);
+    static Matrix4 translate(const Vector3 &t);
+    static Matrix4 scale(const Vector3 &s);
+    static Matrix4 frustum(float l, float r, float b, float t, float n, float f);
+    static Matrix4 perspective(float fov, float aspectRatio, float n, float f);
+    static Matrix4 ortho(float l, float r, float b, float t, float n, float f);
+    static Matrix4 rollPitchYaw(float roll, float pitch, float yaw);
+
+    static Matrix4 invert(const Matrix4 &mat);
+    static Matrix4 transpose(const Matrix4 &mat);
+    static Vector3 transform(const Matrix4 &mat, const Vector3 &pt);
+    static Vector3 transform(const Matrix4 &mat, const Vector4 &pt);
+};
+
+Matrix4 operator*(const Matrix4 &a, const Matrix4 &b);
+Matrix4 &operator*=(Matrix4 &a, const Matrix4 &b);
+Matrix4 operator*(const Matrix4 &a, float b);
+Matrix4 &operator*=(Matrix4 &a, float b);
+Vector4 operator*(const Matrix4 &a, const Vector4 &b);
+
+bool operator==(const Matrix4 &a, const Matrix4 &b);
+bool operator!=(const Matrix4 &a, const Matrix4 &b);
+
+#endif // SAMPLE_UTIL_MATRIX_H