Introduce webkit_glue::Latin1OrUTF16ToUTF16

webkit/glue/latin1_string_conversions.cc

Index: webkit/glue/latin1_string_conversions.cc
diff --git a/webkit/glue/latin1_string_conversions.cc b/webkit/glue/latin1_string_conversions.cc
new file mode 100644
index 0000000000000000000000000000000000000000..76ad67dbee5484a414a520121bd9e96a831273cd
--- /dev/null
+++ b/webkit/glue/latin1_string_conversions.cc
@@ -0,0 +1,19 @@
+// 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 "webkit/glue/latin1_string_conversions.h"
+
+namespace webkit_glue {
+
+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 webkit_glue