Revert 276642 "Turn FaviconClient into a Keyed service."

trunk/src/chrome/browser/favicon/chrome_favicon_client_factory.h

-// Copyright 2014 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_FAVICON_CHROME_FAVICON_CLIENT_FACTORY_H_
-#define CHROME_BROWSER_FAVICON_CHROME_FAVICON_CLIENT_FACTORY_H_
-
-#include "base/memory/singleton.h"
-#include "chrome/browser/favicon/chrome_favicon_client.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-
-class Profile;
-
-// Singleton that owns all ChromeFaviconClients and associates them with
-// Profiles.
-class ChromeFaviconClientFactory : public BrowserContextKeyedServiceFactory {
- public:
-  // Returns the instance of FaviconClient associated with this profile
-  // (creating one if none exists).
-  static FaviconClient* GetForProfile(Profile* profile);
-
-  // Returns an instance of the factory singleton.
-  static ChromeFaviconClientFactory* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<ChromeFaviconClientFactory>;
-
-  ChromeFaviconClientFactory();
-  virtual ~ChromeFaviconClientFactory();
-
-  // BrowserContextKeyedServiceFactory:
-  virtual KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* profile) const OVERRIDE;
-  virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;
-};
-
-#endif  // CHROME_BROWSER_FAVICON_CHROME_FAVICON_CLIENT_FACTORY_H_