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diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RecordUniformBlocksWithLargeArrayMember.h b/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RecordUniformBlocksWithLargeArrayMember.h
new file mode 100644
index 0000000000..d7825c28cb
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+++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/d3d/RecordUniformBlocksWithLargeArrayMember.h
@@ -0,0 +1,28 @@
+//
+// Copyright 2020 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.
+//
+// RecordUniformBlocksWithLargeArrayMember.h:
+// Collect all uniform blocks which have one or more large array members,
+// and the array sizes are greater than or equal to 50. If some of them
+// satify some conditions, we will translate them to StructuredBuffers
+// on Direct3D backend.
+//
+
+#ifndef COMPILER_TRANSLATOR_TREEOPS_D3D_RECORDUNIFORMBLOCKSWITHLARGEARRAYMEMBER_H_
+#define COMPILER_TRANSLATOR_TREEOPS_D3D_RECORDUNIFORMBLOCKSWITHLARGEARRAYMEMBER_H_
+
+#include "compiler/translator/IntermNode.h"
+
+namespace sh
+{
+class TIntermNode;
+
+[[nodiscard]] bool RecordUniformBlocksWithLargeArrayMember(
+    TIntermNode *root,
+    std::map<int, const TInterfaceBlock *> &uniformBlockOptimizedMap,
+    std::set<std::string> &slowCompilingUniformBlockSet);
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_TREEOPS_D3D_RECORDUNIFORMBLOCKSWITHLARGEARRAYMEMBER_H_