Add autoclick to settings page under the accessibility section.

chrome/browser/chromeos/preferences.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/preferences.h"
 
+#include "ash/autoclick/autoclick_controller.h"
 #include "ash/magnifier/magnifier_constants.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/i18n/time_formatting.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_member.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 138 matching lines @@
       ash::kDefaultMagnifierType,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterDoublePref(
       prefs::kScreenMagnifierScale,
       std::numeric_limits<double>::min(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kAutoclickEnabled,
       false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
+  registry->RegisterIntegerPref(
+      prefs::kAutoclickDelayMs,
+      ash::AutoclickController::kDefaultAutoclickDelayMs,
+      user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kShouldAlwaysShowAccessibilityMenu,
       false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterIntegerPref(
       prefs::kMouseSensitivity,
       3,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF);
   registry->RegisterIntegerPref(
       prefs::kTouchpadSensitivity,
@@ skipping 464 matching lines @@
 }
 
 void Preferences::OnTouchHudProjectionToggled(bool enabled) {
   if (touch_hud_projection_enabled_.GetValue() == enabled)
     return;
 
   touch_hud_projection_enabled_.SetValue(enabled);
 }
 
 }  // namespace chromeos