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

chrome/browser/ui/ash/chrome_shell_delegate_views.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 "chrome/browser/ui/ash/chrome_shell_delegate.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/magnifier/magnifier_constants.h"
 #include "ash/media_delegate.h"
 #include "ash/system/tray/default_system_tray_delegate.h"
@@ skipping 105 matching lines @@
     return std::numeric_limits<double>::min();
   }
 
   virtual bool ShouldShowAccessibilityMenu() const OVERRIDE {
     return false;
   }
 
   virtual void SilenceSpokenFeedback() const OVERRIDE {
   }
 
+  virtual void SetVirtualKeyboardEnabled(bool enabled) OVERRIDE {
+  }
+
   virtual bool IsVirtualKeyboardEnabled() const OVERRIDE {
     return false;
   }
 
   virtual void TriggerAccessibilityAlert(
       ash::AccessibilityAlert alert) OVERRIDE {
   }
 
   virtual ash::AccessibilityAlert GetLastAccessibilityAlert() OVERRIDE {
     return ash::A11Y_ALERT_NONE;
@@ skipping 112 matching lines @@
 void ChromeShellDelegate::PlatformInit() {
 #if defined(OS_WIN)
   registrar_.Add(this,
                  chrome::NOTIFICATION_ASH_SESSION_STARTED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_ASH_SESSION_ENDED,
                  content::NotificationService::AllSources());
 #endif
 }