Converting BookmarkModel and HistoryService to ProfileKeyedServices. This just performs the initial…

chrome/browser/history/history_service_factory.h

+// 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.
+
+#ifndef CHROME_BROWSER_HISTORY_HISTORY_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_HISTORY_HISTORY_SERVICE_FACTORY_H_
+#pragma once
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/refcounted_profile_keyed_service_factory.h"
+
+class HistoryService;
+
+// Singleton that owns all HistoryService and associates them with
+// Profiles.
+class HistoryServiceFactory
+    : public RefcountedProfileKeyedServiceFactory {
+ public:
+  static scoped_refptr<HistoryService> GetForProfile(
+      Profile* profile, Profile::ServiceAccessType sat);
+
+  static scoped_refptr<HistoryService> GetForProfileIfExists(
+      Profile* profile);
+
+  static HistoryServiceFactory* GetInstance();
+
+  // In the testing profile, we often clear the history before making a new
+  // one. This takes care of that work. It should only be used in tests.
+  // Note: This does not do any cleanup; it only destroys the service. The
+  // calling test is expected to do the cleanup before calling this function.
+  static void ShutdownForProfile(Profile* profile);
+
+ private:
+  friend struct DefaultSingletonTraits<HistoryServiceFactory>;
+
+  HistoryServiceFactory();
+  virtual ~HistoryServiceFactory();
+
+  // ProfileKeyedServiceFactory:
+  virtual scoped_refptr<RefcountedProfileKeyedService> BuildServiceInstanceFor(
+      Profile* profile) const OVERRIDE;
+  virtual bool ServiceRedirectedInIncognito() OVERRIDE;
+  virtual bool ServiceIsNULLWhileTesting() OVERRIDE;
+};
+
+#endif  // CHROME_BROWSER_HISTORY_HISTORY_SERVICE_FACTORY_H_