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diff --git a/gfx/angle/checkout/src/third_party/compiler/ArrayBoundsClamper.h b/gfx/angle/checkout/src/third_party/compiler/ArrayBoundsClamper.h
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+/*
+ * Copyright (C) 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_
+#define THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_
+
+#include "compiler/translator/InfoSink.h"
+#include "compiler/translator/IntermNode.h"
+
+namespace sh
+{
+
+class ArrayBoundsClamper
+{
+  public:
+    ArrayBoundsClamper();
+
+    // Must be set before compiling any shaders to ensure consistency
+    // between the translated shaders and any necessary prequel.
+    void SetClampingStrategy(ShArrayIndexClampingStrategy clampingStrategy);
+
+    // Marks nodes in the tree that index arrays indirectly as
+    // requiring clamping.
+    void MarkIndirectArrayBoundsForClamping(TIntermNode *root);
+
+    // If necessary, output array clamp function source into the shader source.
+    void OutputClampingFunctionDefinition(TInfoSinkBase &out) const;
+
+    void Cleanup() { mArrayBoundsClampDefinitionNeeded = false; }
+
+  private:
+    bool GetArrayBoundsClampDefinitionNeeded() const { return mArrayBoundsClampDefinitionNeeded; }
+    void SetArrayBoundsClampDefinitionNeeded() { mArrayBoundsClampDefinitionNeeded = true; }
+
+    ShArrayIndexClampingStrategy mClampingStrategy;
+    bool mArrayBoundsClampDefinitionNeeded;
+};
+
+}  // namespace sh
+
+#endif  // THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_