Update from https://crrev.com/305340

tools/clang/translation_unit/test_files/test.h

Index: tools/clang/translation_unit/test_files/test.h
diff --git a/tools/clang/translation_unit/test_files/test.h b/tools/clang/translation_unit/test_files/test.h
new file mode 100644
index 0000000000000000000000000000000000000000..8cc20cef3d7024ae4b0195b49cef90b67a851ece
--- /dev/null
+++ b/tools/clang/translation_unit/test_files/test.h
@@ -0,0 +1,16 @@
+// Copyright (c) 2014 The Chromium 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 TOOLS_CLANG_TRANSLATION_UNIT_TEST_FILES_TEST_H_
+#define TOOLS_CLANG_TRANSLATION_UNIT_TEST_FILES_TEST_H_
+
+#include "binomial.h"
+
+// Number of ways to distribute n items of the same thing to k persons; each
+// person should get at least one item.
+int calculateNumberOfWaysToDistributeNItemsAmongKPersons(int n, int k) {
+  return binomial(n - 1, k - 1);
+}
+
+#endif  // TOOLS_CLANG_TRANSLATION_UNIT_TEST_FILES_TEST_H_