[ios] Adds configuration helper files for voice search.

ios/chrome/browser/ui/voice/speech_input_locale_config.cc

Index: ios/chrome/browser/ui/voice/speech_input_locale_config.cc
diff --git a/ios/chrome/browser/ui/voice/speech_input_locale_config.cc b/ios/chrome/browser/ui/voice/speech_input_locale_config.cc
new file mode 100644
index 0000000000000000000000000000000000000000..339d920002c7b648aa60595c20a0cd774a73fad2
--- /dev/null
+++ b/ios/chrome/browser/ui/voice/speech_input_locale_config.cc
@@ -0,0 +1,13 @@
+// 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/ui/voice/speech_input_locale_config.h"
+
+namespace voice {
+
+SpeechInputLocaleConfig::SpeechInputLocaleConfig() {}
+
+SpeechInputLocaleConfig::~SpeechInputLocaleConfig() {}
+
+}  // namespace voice