Add an accessibility alert for incorrect use of some accelerators.

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"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
+#include "chrome/browser/accessibility/accessibility_events.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/caps_lock_delegate_views.h"
 #include "chrome/browser/ui/ash/chrome_new_window_delegate.h"
 #include "chrome/browser/ui/ash/session_state_delegate_views.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ skipping 92 matching lines @@
     return std::numeric_limits<double>::min();
   }
 
   virtual bool ShouldAlwaysShowAccessibilityMenu() const OVERRIDE {
     return false;
   }
 
   virtual void SilenceSpokenFeedback() const OVERRIDE {
   }
 
+  virtual void TriggerAccessibilityAlert(
+      ash::AccessibilityAlert alert) OVERRIDE {
+  }
+
+  virtual ash::AccessibilityAlert GetLastAccessibilityAlert() OVERRIDE {
+    return ash::A11Y_ALERT_NONE;
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(EmptyAccessibilityDelegate);
 };
 
 }  // namespace
 
 bool ChromeShellDelegate::IsFirstRunAfterBoot() const {
   return false;
 }
 
@@ skipping 95 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
 }