[Sync] Fix sync lint errors/includes, update presubmit.

components/sync/engine/browser_thread_model_worker_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/sync/engine/browser_thread_model_worker.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/location.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
-#include "base/single_thread_task_runner.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/timer/timer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Thread;
 using base::TimeDelta;
 
 namespace syncer {
@@ skipping 65 matching lines @@
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&SyncBrowserThreadModelWorkerTest::ScheduleWork,
                             factory()->GetWeakPtr()));
   base::RunLoop().Run();
   EXPECT_TRUE(did_do_work());
 }
 
 }  // namespace
 
 }  // namespace syncer