Make WebUI objects not derive from WebUI. WebUI objects own the controller. This is the ownership...

chrome/browser/ui/webui/options2/chromeos/system_options_handler2.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/ui/webui/options2/chromeos/system_options_handler2.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 11 matching lines @@
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/chromeos/system/input_device_settings.h"
 #include "chrome/browser/chromeos/xinput_hierarchy_changed_event_listener.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/options2/chromeos/system_settings_provider2.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/pref_names.h"
+#include "content/browser/webui/web_ui.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using content::BrowserThread;
 
@@ skipping 221 matching lines @@
       DecreaseScreenBrightness(false);
 }
 
 void SystemOptionsHandler::IncreaseScreenBrightnessCallback(
     const ListValue* args) {
   chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
       IncreaseScreenBrightness();
 }
 
 }  // namespace options2