Test that simulates touch exploration and checks speech on tabs and also the empty bookmark bar.

chrome/browser/chromeos/accessibility/accessibility_util.cc

 // Copyright (c) 2012 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/accessibility/accessibility_util.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/ui/singleton_tabs.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "content/public/test/browser_test_utils.h"
+#include "extensions/browser/extension_host.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/browser/process_manager.h"
 #include "url/gurl.h"
 
 // TODO(yoshiki): move the following method to accessibility_manager.cc and
 // remove this file.
 
 namespace chromeos {
 namespace accessibility {
 
 void EnableVirtualKeyboard(bool enabled) {
   PrefService* pref_service = g_browser_process->local_state();
   pref_service->SetBoolean(prefs::kAccessibilityVirtualKeyboardEnabled,
                            enabled);
   pref_service->CommitPendingWrite();
 }
 
 bool IsVirtualKeyboardEnabled() {
   if (!g_browser_process) {
     return false;
   }
   PrefService* prefs = g_browser_process->local_state();
   bool virtual_keyboard_enabled =
       prefs && prefs->GetBoolean(prefs::kAccessibilityVirtualKeyboardEnabled);
   return virtual_keyboard_enabled;
 }
 
 void ShowAccessibilityHelp(Browser* browser) {
   chrome::ShowSingletonTab(browser, GURL(chrome::kChromeAccessibilityHelpURL));
 }
 
+
+void SimulateTouchScreenInChromeVoxForTest(content::BrowserContext* profile) {
+  // ChromeVox looks at whether 'ontouchstart' exists to know whether or not it
+  // should respond to hover events. Fake it so that touch exploration events
+  // get spoken.
+  extensions::ExtensionHost* host =
+      extensions::ExtensionSystem::Get(profile)
+          ->process_manager()
+          ->GetBackgroundHostForExtension(
+              extension_misc::kChromeVoxExtensionId);
+  CHECK(content::ExecuteScript(
+      host->host_contents(),
+      "if (!('ontouchstart' in window)) window.ontouchstart = function() {};"));
+}
+
 }  // namespace accessibility
 }  // namespace chromeos