Local NTP: Introduce OneGoogleBarService

chrome/browser/search/one_google_bar/one_google_bar_service_factory.h

+// Copyright 2017 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_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_FACTORY_H_
+
+#include "base/macros.h"
+#include "base/memory/singleton.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+
+class OneGoogleBarService;
+class Profile;
+
+class OneGoogleBarServiceFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  // Returns the OneGoogleBarService for |profile|.
+  static OneGoogleBarService* GetForProfile(Profile* profile);
+
+  static OneGoogleBarServiceFactory* GetInstance();
+
+ private:
+  friend struct base::DefaultSingletonTraits<OneGoogleBarServiceFactory>;
+
+  OneGoogleBarServiceFactory();
+  ~OneGoogleBarServiceFactory() override;
+
+  // Overridden from BrowserContextKeyedServiceFactory:
+  KeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* profile) const override;
+
+  DISALLOW_COPY_AND_ASSIGN(OneGoogleBarServiceFactory);
+};
+
+#endif  // CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_FACTORY_H_