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diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h b/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h
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+++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/DeferGlobalInitializers.h
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+//
+// Copyright 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 separate
+// function that is called 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. Note that it's important that the function definition
+// is at the end of the shader, as some globals may be declared after main().
+//
+// It can also initialize all uninitialized globals.
+//
+
+#ifndef COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_
+#define COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_
+
+#include "common/angleutils.h"
+
+namespace sh
+{
+
+class TCompiler;
+class TIntermBlock;
+class TSymbolTable;
+
+[[nodiscard]] bool DeferGlobalInitializers(TCompiler *compiler,
+                                           TIntermBlock *root,
+                                           bool initializeUninitializedGlobals,
+                                           bool canUseLoopsToInitialize,
+                                           bool highPrecisionSupported,
+                                           bool forceDeferGlobalInitializers,
+                                           TSymbolTable *symbolTable);
+
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_TREEOPS_DEFERGLOBALINITIALIZERS_H_