[ios] Adds configuration helper files for voice search.

ios/chrome/browser/voice/speech_input_locale_config.mm

Index: ios/chrome/browser/voice/speech_input_locale_config.mm
diff --git a/ios/chrome/browser/voice/speech_input_locale_config.mm b/ios/chrome/browser/voice/speech_input_locale_config.mm
new file mode 100644
index 0000000000000000000000000000000000000000..a4941b36fafd646bab4b274d29f591f93e604bc4
--- /dev/null
+++ b/ios/chrome/browser/voice/speech_input_locale_config.mm
@@ -0,0 +1,16 @@
+// Copyright 2016 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 "ios/chrome/browser/voice/speech_input_locale_config.h"
+
+#include "ios/chrome/browser/voice/speech_input_locale_config_impl.h"
+
+namespace voice {
+
+// static
+SpeechInputLocaleConfig* SpeechInputLocaleConfig::GetInstance() {
+  return SpeechInputLocaleConfigImpl::GetInstance();
+}
+
+}  // namespace voice