A11y setting: mono audio UI

ash/shell.cc

 // Copyright (c) 2012 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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 122 matching lines @@
 #include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
 #include "ash/system/chromeos/power/power_event_observer.h"
 #include "ash/system/chromeos/power/power_status.h"
 #include "ash/system/chromeos/power/video_activity_notifier.h"
 #include "ash/system/chromeos/session/last_window_closed_logout_reminder.h"
 #include "ash/system/chromeos/session/logout_confirmation_controller.h"
 #include "ash/touch/touch_transformer_controller.h"
 #include "ash/virtual_keyboard_controller.h"
 #include "base/bind_helpers.h"
 #include "base/sys_info.h"
+#include "chromeos/audio/audio_a11y_controller.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "ui/chromeos/user_activity_power_manager_notifier.h"
 #include "ui/display/chromeos/display_configurator.h"
 #endif  // defined(OS_CHROMEOS)
 
 namespace ash {
 
 namespace {
 
 using aura::Window;
@@ skipping 603 matching lines @@
 
 #if defined(OS_CHROMEOS)
   // VideoActivityNotifier must be deleted before |video_detector_| is
   // deleted because it's observing video activity through
   // VideoDetectorObserver interface.
   video_activity_notifier_.reset();
 #endif  // defined(OS_CHROMEOS)
   video_detector_.reset();
   high_contrast_controller_.reset();
 
+#if defined(OS_CHROMEOS)
+  audio_a11y_controller_.reset();
+#endif  // defined(OS_CHROMEOS)

[oshima, 2016/04/11 17:05:30]

since you initialized very early on, can you destroy later, 
after touch_transformer_controller ?

[Qiang(Joe) Xu, 2016/04/11 20:59:09]

Done.

+
   shadow_controller_.reset();
   resize_shadow_controller_.reset();
 
   window_cycle_controller_.reset();
   window_selector_controller_.reset();
 
   // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
   // and has window observers.
   shelf_window_watcher_.reset();
 
@@ skipping 310 matching lines @@
                      : init_params.keyboard_factory.Run();
 
   window_tree_host_manager_->InitHosts();
 
 #if defined(OS_CHROMEOS)
   // Needs to be created after InitDisplays() since it may cause the virtual
   // keyboard to be deployed.
   virtual_keyboard_controller_.reset(new VirtualKeyboardController);
 #endif  // defined(OS_CHROMEOS)
 
+#if defined(OS_CHROMEOS)
+  audio_a11y_controller_.reset(new chromeos::AudioA11yController);
+#endif  // defined(OS_CHROMEOS)
+
   // It needs to be created after RootWindowController has been created
   // (which calls OnWindowResized has been called, otherwise the
   // widget will not paint when restoring after a browser crash.  Also it needs
   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
   // the correct size.
   user_wallpaper_delegate_->InitializeWallpaper();
 
   if (cursor_manager_) {
     if (initially_hide_cursor_)
       cursor_manager_->HideCursor();
@@ skipping 109 matching lines @@
 
 void Shell::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash