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diff --git a/gfx/angle/src/compiler/translator/DeferGlobalInitializers.h b/gfx/angle/src/compiler/translator/DeferGlobalInitializers.h
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+++ b/gfx/angle/src/compiler/translator/DeferGlobalInitializers.h
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+//
+// Copyright (c) 2016 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.
+//
+// DeferGlobalInitializers is an AST traverser that moves global initializers into a function, and
+// adds a function call to that function in the beginning of main().
+// This enables initialization of globals with uniforms or non-constant globals, as allowed by
+// the WebGL spec. Some initializers referencing non-constants may need to be unfolded into if
+// statements in HLSL - this kind of steps should be done after DeferGlobalInitializers is run.
+//
+
+#ifndef COMPILER_TRANSLATOR_DEFERGLOBALINITIALIZERS_H_
+#define COMPILER_TRANSLATOR_DEFERGLOBALINITIALIZERS_H_
+
+class TIntermBlock;
+
+namespace sh
+{
+void DeferGlobalInitializers(TIntermBlock *root);
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_DEFERGLOBALINITIALIZERS_H_