Combine all suggestions factories into ContentSuggestionsServiceFactory

chrome/browser/ntp_snippets/ntp_snippets_service_factory.h

-// Copyright 2015 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_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_FACTORY_H_
-#define CHROME_BROWSER_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_FACTORY_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-
-class Profile;
-
-namespace base {
-template <typename T>
-struct DefaultSingletonTraits;
-}  // namespace base
-
-namespace ntp_snippets {
-class NTPSnippetsService;
-}  // namespace ntp_snippets
-
-// A factory to create NTPSnippetsService and associate them to its browser
-// context.
-class NTPSnippetsServiceFactory : public BrowserContextKeyedServiceFactory {
- public:
-  static NTPSnippetsServiceFactory* GetInstance();
-  static ntp_snippets::NTPSnippetsService* GetForProfile(Profile* profile);
-
- private:
-  friend struct base::DefaultSingletonTraits<NTPSnippetsServiceFactory>;
-
-  NTPSnippetsServiceFactory();
-  ~NTPSnippetsServiceFactory() override;
-
-  // BrowserContextKeyedServiceFactory implementation.
-  KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* context) const override;
-
-  DISALLOW_COPY_AND_ASSIGN(NTPSnippetsServiceFactory);
-};
-
-#endif  // CHROME_BROWSER_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_FACTORY_H_