[sync] Clean up path generation for the local sync database.

components/browser_sync/profile_sync_service_unittest.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 "components/browser_sync/profile_sync_service.h"
 
 #include <utility>
 
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 204 matching lines @@
 
   void CreateServiceWithLocalSyncBackend() {
     component_factory_ = profile_sync_service_bundle_.component_factory();
     ProfileSyncServiceBundle::SyncClientBuilder builder(
         &profile_sync_service_bundle_);
     ProfileSyncService::InitParams init_params =
         profile_sync_service_bundle_.CreateBasicInitParams(
             ProfileSyncService::AUTO_START, builder.Build());
 
     prefs()->SetBoolean(syncer::prefs::kEnableLocalSyncBackend, true);
-    init_params.local_sync_backend_folder =
-        base::FilePath(FILE_PATH_LITERAL("dummyPath"));
     init_params.oauth2_token_service = nullptr;
     init_params.gaia_cookie_manager_service = nullptr;
 
     service_ = base::MakeUnique<ProfileSyncService>(std::move(init_params));
     service_->RegisterDataTypeController(
         base::MakeUnique<syncer::FakeDataTypeController>(syncer::BOOKMARKS));
   }
 
   void ShutdownAndDeleteService() {
     if (service_)
@@ skipping 731 matching lines @@
   // Progress the controller to RUNNING first, which is how the service
   // determines whether a type is enabled.
   controller->StartAssociating(base::Bind(&DoNothing));
   controller->FinishStart(DataTypeController::OK_FIRST_RUN);
   service()->RegisterDataTypeController(std::move(controller));
   EXPECT_NE(nullptr, service()->GetOpenTabsUIDelegate());
 }
 
 }  // namespace
 }  // namespace browser_sync