Add a11y on-screen keyboard to accessibility menu on system tray.

ash/default_accessibility_delegate.cc

 // Copyright 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 "ash/default_accessibility_delegate.h"
 
 #include <limits>
 
 namespace ash {
 namespace internal {
 
 DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
     : spoken_feedback_enabled_(false),
       high_contrast_enabled_(false),
       screen_magnifier_enabled_(false),
       screen_magnifier_type_(kDefaultMagnifierType),
       large_cursor_enabled_(false),
       autoclick_enabled_(false),
+      virtual_keyboard_enabled_(false),
       accessibility_alert_(A11Y_ALERT_NONE) {
 }
 
 DefaultAccessibilityDelegate::~DefaultAccessibilityDelegate() {}
 
 bool DefaultAccessibilityDelegate::IsSpokenFeedbackEnabled() const {
   return spoken_feedback_enabled_;
 }
 
 void DefaultAccessibilityDelegate::ToggleHighContrast() {
@@ skipping 29 matching lines @@
 }
 
 void DefaultAccessibilityDelegate::SetAutoclickEnabled(bool enabled) {
   autoclick_enabled_ = enabled;
 }
 
 bool DefaultAccessibilityDelegate::IsAutoclickEnabled() const {
   return autoclick_enabled_;
 }
 
+void DefaultAccessibilityDelegate::SetVirtualKeyboardEnabled(bool enabled) {
+  virtual_keyboard_enabled_ = enabled;
+}
+
 bool DefaultAccessibilityDelegate::IsVirtualKeyboardEnabled() const {
-  return false;
+  return virtual_keyboard_enabled_;
 }
 
 bool DefaultAccessibilityDelegate::ShouldShowAccessibilityMenu() const {
   return spoken_feedback_enabled_ ||
          high_contrast_enabled_ ||
          screen_magnifier_enabled_ ||
          large_cursor_enabled_ ||
-         autoclick_enabled_;
+         autoclick_enabled_ ||
+         virtual_keyboard_enabled_;
 }
 
 void DefaultAccessibilityDelegate::SilenceSpokenFeedback() const {
 }
 
 void DefaultAccessibilityDelegate::ToggleSpokenFeedback(
     AccessibilityNotificationVisibility notify) {
   spoken_feedback_enabled_ = !spoken_feedback_enabled_;
 }
 
@@ skipping 12 matching lines @@
 AccessibilityAlert DefaultAccessibilityDelegate::GetLastAccessibilityAlert() {
   return accessibility_alert_;
 }
 
 base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
   return base::TimeDelta();
 }
 
 }  // namespace internal
 }  // namespace ash