Sync the launch type pref for apps.

chrome/browser/ui/webui/ntp/app_launcher_handler.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/ntp/app_launcher_handler.h"
 
 #include <vector>
 
 #include "apps/metrics_names.h"
 #include "base/auto_reset.h"
@@ skipping 544 matching lines @@
 
   const Extension* extension =
       extension_service_->GetExtensionById(extension_id, true);
   if (!extension)
     return;
 
   // Don't update the page; it already knows about the launch type change.
   base::AutoReset<bool> auto_reset(&ignore_changes_, true);
 
   extensions::SetLaunchType(
-      extension_service_->extension_prefs(),
+      extension_service_,
       extension_id,
-      static_cast<extensions::LaunchType>(
-          static_cast<int>(launch_type)));
+      static_cast<extensions::LaunchType>(static_cast<int>(launch_type)));
 }
 
 void AppLauncherHandler::HandleUninstallApp(const ListValue* args) {
   std::string extension_id;
   CHECK(args->GetString(0, &extension_id));
 
   const Extension* extension = extension_service_->GetInstalledExtension(
       extension_id);
   if (!extension)
     return;
@@ skipping 262 matching lines @@
 ExtensionUninstallDialog* AppLauncherHandler::GetExtensionUninstallDialog() {
   if (!extension_uninstall_dialog_.get()) {
     Browser* browser = chrome::FindBrowserWithWebContents(
         web_ui()->GetWebContents());
     extension_uninstall_dialog_.reset(
         ExtensionUninstallDialog::Create(extension_service_->profile(),
                                          browser, this));
   }
   return extension_uninstall_dialog_.get();
 }