Add localized default audio device names.

media/base/media_resources.cc

+// Copyright 2015 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/utf_string_conversions.h"
+#include "media/base/media_resources.h"
+
+namespace media {
+
+static LocalizedStringProvider g_localized_string_provider = nullptr;
+
+void SetLocalizedStringProvider(LocalizedStringProvider func) {
+  g_localized_string_provider = func;

[DaleCurtis, 2015/09/17 16:37:41]

DCHECK that one isn't already set?

[ajm, 2015/09/17 16:52:02]

Will do.

+}
+
+std::string GetLocalizedStringUTF8(MessageId message_id) {
+  return base::UTF16ToUTF8(GetLocalizedStringUTF16(message_id));
+}
+
+base::string16 GetLocalizedStringUTF16(MessageId message_id) {
+  return g_localized_string_provider ? g_localized_string_provider(message_id)
+                                     : base::string16();
+}
+
+}  // namespace media