Revert of Componentize WebHistoryService

chrome/browser/history/web_history_service_factory.cc

 // 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.
 
 #include "chrome/browser/history/web_history_service_factory.h"
 
+#include "chrome/browser/content_settings/cookie_settings.h"
+#include "chrome/browser/history/web_history_service.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
-#include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
-#include "components/history/core/browser/web_history_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
-#include "components/signin/core/browser/profile_oauth2_token_service.h"
-#include "components/signin/core/browser/signin_manager.h"
-#include "net/url_request/url_request_context_getter.h"
 
 namespace {
 // Returns true if the user is signed in and full history sync is enabled,
 // and false otherwise.
 bool IsHistorySyncEnabled(Profile* profile) {
   ProfileSyncService* sync =
       ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
   return sync &&
       sync->SyncActive() &&
       sync->GetActiveDataTypes().Has(syncer::HISTORY_DELETE_DIRECTIVES);
 }
 
 }  // namespace
 
 // static
 WebHistoryServiceFactory* WebHistoryServiceFactory::GetInstance() {
   return Singleton<WebHistoryServiceFactory>::get();
 }
 
 // static
 history::WebHistoryService* WebHistoryServiceFactory::GetForProfile(
       Profile* profile) {
-  if (!IsHistorySyncEnabled(profile))
-    return nullptr;
-
-  return static_cast<history::WebHistoryService*>(
-      GetInstance()->GetServiceForBrowserContext(profile, true));
+  if (IsHistorySyncEnabled(profile)) {
+    return static_cast<history::WebHistoryService*>(
+        GetInstance()->GetServiceForBrowserContext(profile, true));
+  }
+  return NULL;
 }
 
 KeyedService* WebHistoryServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = static_cast<Profile*>(context);
+
   // Ensure that the service is not instantiated or used if the user is not
   // signed into sync, or if web history is not enabled.
-  if (!IsHistorySyncEnabled(profile))
-    return nullptr;
-
-  return new history::WebHistoryService(
-      ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
-      SigninManagerFactory::GetForProfile(profile),
-      profile->GetRequestContext());
+  return IsHistorySyncEnabled(profile) ?
+      new history::WebHistoryService(profile) : NULL;
 }
 
 WebHistoryServiceFactory::WebHistoryServiceFactory()
     : BrowserContextKeyedServiceFactory(
         "WebHistoryServiceFactory",
         BrowserContextDependencyManager::GetInstance()) {
+  DependsOn(CookieSettings::Factory::GetInstance());
   DependsOn(ProfileOAuth2TokenServiceFactory::GetInstance());
-  DependsOn(SigninManagerFactory::GetInstance());
 }
 
 WebHistoryServiceFactory::~WebHistoryServiceFactory() {
 }