[icu] Support loading data file from default location

src/base/file-utils.h

Index: src/base/file-utils.h
diff --git a/src/base/file-utils.h b/src/base/file-utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..ce9e9a1c41cb2876f363d5093585cbe3947f402d
--- /dev/null
+++ b/src/base/file-utils.h
@@ -0,0 +1,18 @@
+// Copyright 2016 the V8 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.
+
+#ifndef V8_FILE_UTILS_H_
+#define V8_FILE_UTILS_H_
+
+namespace v8 {
+namespace internal {
+
+// Helper functions to manipulate file paths.
+
+char* RelativePath(char** buffer, const char* exec_path, const char* name);
+
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_FILE_UTILS_H_