A11y setting: mono audio UI

chromeos/audio/audio_a11y_controller.cc

Index: chromeos/audio/audio_a11y_controller.cc
diff --git a/chromeos/audio/audio_a11y_controller.cc b/chromeos/audio/audio_a11y_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0e1dc5e103237f40e5db0aa0d62a034fc9bbee33
--- /dev/null
+++ b/chromeos/audio/audio_a11y_controller.cc
@@ -0,0 +1,27 @@
+// 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 "chromeos/audio/audio_a11y_controller.h"
+
+namespace chromeos {
+
+AudioA11yController::AudioA11yController() : cras_audio_handler_(nullptr) {
+  cras_audio_handler_ = CrasAudioHandler::Get();
+}
+
+AudioA11yController::~AudioA11yController() {
+}
+
+void AudioA11yController::SetOutputMono(bool enabled) {
+  if (cras_audio_handler_->IsOutputMonoEnabled() == enabled)
+    return;
+
+  cras_audio_handler_->SetOutputMono(enabled);
+}
+
+}  // namespace chromeos
+
+
+
+