Remove dangling files and clean up gyp.

chrome/browser/background/background_mode_manager_factory.h

-// Copyright (c) 2011 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.
-
-#ifndef CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_FACTORY_H_
-#define CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_FACTORY_H_
-
-#include "base/compiler_specific.h"
-#include "base/memory/singleton.h"
-#include "chrome/browser/profiles/profile_keyed_service_factory.h"
-
-class BackgroundModeManager;
-class Profile;
-
-// Singleton that owns all BackgroundModeManagers and associates them with
-// Profiles. Listens for the Profile's destruction notification and cleans up
-// the associated BackgroundModeManager.
-class BackgroundModeManagerFactory : public ProfileKeyedServiceFactory {
- public:
-  static BackgroundModeManager* GetForProfile(Profile* profile);
-
-  static BackgroundModeManagerFactory* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<BackgroundModeManagerFactory>;
-
-  BackgroundModeManagerFactory();
-  virtual ~BackgroundModeManagerFactory();
-
-  // ProfileKeyedServiceFactory:
-  virtual ProfileKeyedService* BuildServiceInstanceFor(
-      Profile* profile) const OVERRIDE;
-};
-
-#endif  // CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_FACTORY_H_