exo: Use WMHelper to access ash accessibility related features.

components/exo/wm_helper_ash.cc

 // 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 "components/exo/wm_helper_ash.h"
 
+#include "ash/common/accessibility_delegate.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "base/memory/singleton.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace exo {
 
@@ skipping 65 matching lines @@
 void WMHelperAsh::RemovePostTargetHandler(ui::EventHandler* handler) {
   ash::Shell::GetInstance()->RemovePostTargetHandler(handler);
 }
 
 bool WMHelperAsh::IsMaximizeModeWindowManagerEnabled() const {
   return ash::WmShell::Get()
       ->maximize_mode_controller()
       ->IsMaximizeModeWindowManagerEnabled();
 }
 
+bool WMHelperAsh::IsSpokenFeedbackEnabled() const {
+  return ash::WmShell::Get()
+      ->accessibility_delegate()
+      ->IsSpokenFeedbackEnabled();
+}
+
+void WMHelperAsh::PlayEarcon(int sound_key) const {
+  return ash::WmShell::Get()->accessibility_delegate()->PlayEarcon(sound_key);
+}
+
 void WMHelperAsh::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   NotifyWindowActivated(gained_active, lost_active);
 }
 
 void WMHelperAsh::OnWindowFocused(aura::Window* gained_focus,
                                   aura::Window* lost_focus) {
   NotifyWindowFocused(gained_focus, lost_focus);
 }
 
 void WMHelperAsh::OnCursorVisibilityChanged(bool is_visible) {
   NotifyCursorVisibilityChanged(is_visible);
 }
 
 void WMHelperAsh::OnCursorSetChanged(ui::CursorSetType cursor_set) {
   NotifyCursorSetChanged(cursor_set);
 }
 
+void WMHelperAsh::OnAccessibilityModeChanged(
+    ash::AccessibilityNotificationVisibility notify) {
+  NotifyAccessibilityModeChanged();
+}
+
 void WMHelperAsh::OnMaximizeModeStarted() {
   NotifyMaximizeModeStarted();
 }
 
 void WMHelperAsh::OnMaximizeModeEnded() {
   NotifyMaximizeModeEnded();
 }
 
 }  // namespace exo