Turn FaviconClient into a Keyed service.

chrome/browser/favicon/chrome_favicon_client_factory.h

Index: chrome/browser/favicon/chrome_favicon_client_factory.h
diff --git a/chrome/browser/favicon/chrome_favicon_client_factory.h b/chrome/browser/favicon/chrome_favicon_client_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..36854e8ea0b3cdd18aa36550883c227a9bb46bda
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+++ b/chrome/browser/favicon/chrome_favicon_client_factory.h
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+// 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;
+};
+
+#endif  // CHROME_BROWSER_FAVICON_CHROME_FAVICON_CLIENT_FACTORY_H_