Fix to enable toggling accessibility using Ctrl+Alt+Z

chrome/browser/chromeos/login/wizard_accessibility_handler.cc

 // Copyright (c) 2010 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/chromeos/login/wizard_accessibility_handler.h"
 
 #include <algorithm>
 
 #include "app/l10n_util.h"
 #include "base/i18n/char_iterator.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/string_number_conversions.h"
 #include "chrome/browser/accessibility_events.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
-#include "chrome/browser/chromeos/cros/speech_synthesis_library.h"
 #include "chrome/browser/extensions/extension_accessibility_api.h"
 #include "chrome/browser/extensions/extension_accessibility_api_constants.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/notification_registrar.h"
 #include "chrome/common/notification_service.h"
 #include "grit/generated_resources.h"
 
 namespace keys = extension_accessibility_api_constants;
 
 namespace {
@@ skipping 75 matching lines @@
 void WizardAccessibilityHandler::Observe(
     NotificationType type,
     const NotificationSource& source,
     const NotificationDetails& details) {
   const AccessibilityControlInfo *control_info =
       Details<const AccessibilityControlInfo>(details).ptr();
   std::string description;
   EarconType earcon = NO_EARCON;
   DescribeAccessibilityEvent(type, control_info, &description, &earcon);
   Speak(description.c_str(), false, true);
+  if (earcon != NO_EARCON) {
+    PlayEarcon(earcon);
+  }

[xiyuan, 2010/12/15 23:07:20]

nit: you don't need wrap one-liner in "{}"

+}
+
+void WizardAccessibilityHandler::PlayEarcon(EarconType earcon_type) {
+  if (chromeos::CrosLibrary::Get()->EnsureLoaded()) {
+    chromeos::CrosLibrary::Get()->GetSpeechSynthesisLibrary()->
+        PlayEarcon(earcon_type);
+  }
 }
 
 void WizardAccessibilityHandler::Speak(const char* speak_str,
                                        bool queue,
                                        bool interruptible) {
   if (chromeos::CrosLibrary::Get()->EnsureLoaded()) {
     if (queue || !interruptible) {
       std::string props = "";
       props.append("enqueue=");
       props.append(queue ? "1;" : "0;");
@@ skipping 314 matching lines @@
   } else if (inserted.size() > 0) {
     // Speak inserted text.
     AppendUtterance(inserted, out_spoken_description);
   } else if (deleted.size() > 0) {
     // Speak deleted text.
     AppendUtterance(deleted, out_spoken_description);
   }
 }
 
 }  // namespace chromeos