Revert of Delete base/prefs and update callers to use components.

chrome/browser/ui/app_list/app_list_service_unittest.cc

 // Copyright 2013 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/ui/app_list/app_list_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 82 matching lines @@
     user_data_dir_ = base::FilePath(FILE_PATH_LITERAL("udd"));
     profile1_.reset(
         new FakeProfile("p1", user_data_dir_.AppendASCII("profile1")));
     profile2_.reset(
         new FakeProfile("p2", user_data_dir_.AppendASCII("profile2")));
     PrefRegistrySimple* pref_registry = new PrefRegistrySimple;
 
     AppListService::RegisterPrefs(pref_registry);
     profiles::RegisterPrefs(pref_registry);
 
-    PrefServiceFactory factory;
+    base::PrefServiceFactory factory;
     factory.set_user_prefs(make_scoped_refptr(new TestingPrefStore));
     local_state_ = factory.Create(pref_registry);
 
     profile_store_ = new FakeProfileStore(user_data_dir_, local_state_.get());
     service_.reset(new TestingAppListServiceImpl(
         command_line,
         local_state_.get(),
         scoped_ptr<ProfileStore>(profile_store_)));
   }
 
@@ skipping 156 matching lines @@
   EXPECT_EQ(AppListService::ENABLE_FOR_APP_INSTALL,
             local_state_->GetInteger(prefs::kAppListEnableMethod));
   EXPECT_NE(0, local_state_->GetInt64(prefs::kAppListEnableTime));
 
   // An auto-show here should update the enable method to prevent recording it
   // as ENABLE_FOR_APP_INSTALL.
   service_->ShowForAppInstall(profile1_.get(), "", false);
   EXPECT_EQ(AppListService::ENABLE_SHOWN_UNDISCOVERED,
             local_state_->GetInteger(prefs::kAppListEnableMethod));
 }