Introduce webkit_glue::Latin1OrUTF16ToUTF16

base/strings/latin1_string_conversions.cc

+// Copyright (c) 2013 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.
+
+#include "base/strings/latin1_string_conversions.h"
+
+namespace base {
+
+string16 Latin1OrUTF16ToUTF16(
+    size_t length, const Latin1Char* latin1, const char16* utf16) {
+  if (!length)
+    return string16();
+  if (latin1)
+    return string16(latin1, latin1 + length);
+  return string16(utf16, utf16 + length);
+}
+
+}  // namespace base