Remove unused include in sequenced_worker_pool.h

third_party/WebKit/Source/platform/WebTaskRunner.cpp

 // Copyright 2015 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 "public/platform/WebTaskRunner.h"
 
+#include "base/single_thread_task_runner.h"
+
 namespace blink {
 
 void WebTaskRunner::postTask(const WebTraceLocation& location,
                              std::unique_ptr<CrossThreadClosure> task) {
   toSingleThreadTaskRunner()->PostTask(location,
                                        convertToBaseCallback(std::move(task)));
 }
 
 void WebTaskRunner::postDelayedTask(const WebTraceLocation& location,
                                     std::unique_ptr<CrossThreadClosure> task,
@@ skipping 11 matching lines @@
 
 void WebTaskRunner::postDelayedTask(const WebTraceLocation& location,
                                     std::unique_ptr<WTF::Closure> task,
                                     long long delayMs) {
   toSingleThreadTaskRunner()->PostDelayedTask(
       location, convertToBaseCallback(std::move(task)),
       base::TimeDelta::FromMilliseconds(delayMs));
 }
 
 }  // namespace blink