[SuggestionsService] Split SuggestionsService interface from impl

ios/chrome/browser/suggestions/suggestions_service_factory.mm

 // 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.
 
 #include "ios/chrome/browser/suggestions/suggestions_service_factory.h"
 
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "components/browser_sync/profile_sync_service.h"
 #include "components/image_fetcher/image_fetcher.h"
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
 #include "components/leveldb_proto/proto_database_impl.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_manager.h"
 #include "components/suggestions/blacklist_store.h"
 #include "components/suggestions/image_manager.h"
-#include "components/suggestions/suggestions_service.h"
+#include "components/suggestions/suggestions_service_impl.h"
 #include "components/suggestions/suggestions_store.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/signin/oauth2_token_service_factory.h"
 #include "ios/chrome/browser/signin/signin_manager_factory.h"
 #include "ios/chrome/browser/suggestions/image_fetcher_impl.h"
 #include "ios/chrome/browser/sync/ios_chrome_profile_sync_service_factory.h"
 #include "ios/web/public/browser_state.h"
 #include "ios/web/public/web_thread.h"
 
 namespace suggestions {
@@ skipping 50 matching lines @@
   std::unique_ptr<BlacklistStore> blacklist_store(
       new BlacklistStore(browser_state->GetPrefs()));
   std::unique_ptr<leveldb_proto::ProtoDatabaseImpl<ImageData>> db(
       new leveldb_proto::ProtoDatabaseImpl<ImageData>(background_task_runner));
   std::unique_ptr<image_fetcher::ImageFetcher> image_fetcher(
       new ImageFetcherImpl(browser_state->GetRequestContext(),
                            sequenced_worker_pool));
   std::unique_ptr<ImageManager> thumbnail_manager(new ImageManager(
       std::move(image_fetcher), std::move(db), database_dir,
       web::WebThread::GetTaskRunnerForThread(web::WebThread::DB)));
-  return base::MakeUnique<SuggestionsService>(
+  return base::MakeUnique<SuggestionsServiceImpl>(
       signin_manager, token_service, sync_service,
       browser_state->GetRequestContext(), std::move(suggestions_store),
       std::move(thumbnail_manager), std::move(blacklist_store));
 }
 
 void SuggestionsServiceFactory::RegisterBrowserStatePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
-  SuggestionsService::RegisterProfilePrefs(registry);
+  SuggestionsServiceImpl::RegisterProfilePrefs(registry);
 }
 
 }  // namespace suggestions