Remove some Profile-keyed factory boilerplate: management omnibox preference push_messaging.

chrome/browser/extensions/api/management/management_api_factory.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/extensions/api/management/management_api_factory.h"
-
-#include "chrome/browser/extensions/api/management/management_api.h"
-#include "chrome/browser/extensions/extension_system_factory.h"
-#include "chrome/browser/profiles/profile_dependency_manager.h"
-
-// static
-ExtensionManagementAPIFactory* ExtensionManagementAPIFactory::GetInstance() {
-  return Singleton<ExtensionManagementAPIFactory>::get();
-}
-
-ExtensionManagementAPIFactory::ExtensionManagementAPIFactory()
-    : ProfileKeyedServiceFactory("ExtensionManagementAPI",
-                                 ProfileDependencyManager::GetInstance()) {
-  DependsOn(extensions::ExtensionSystemFactory::GetInstance());
-}
-
-ExtensionManagementAPIFactory::~ExtensionManagementAPIFactory() {
-}
-
-ProfileKeyedService* ExtensionManagementAPIFactory::BuildServiceInstanceFor(
-    Profile* profile) const {
-  return new ExtensionManagementAPI(profile);
-}
-
-bool ExtensionManagementAPIFactory::ServiceIsCreatedWithProfile() const {
-  return true;
-}
-
-bool ExtensionManagementAPIFactory::ServiceIsNULLWhileTesting() const {
-  return true;
-}