Add missing #include around sequenced_worker_pool.h in //chrome

chrome/browser/budget_service/budget_manager.cc

 // Copyright 2016 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/budget_service/budget_manager.h"
 
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "chrome/browser/engagement/site_engagement_score.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/origin_util.h"
 #include "third_party/WebKit/public/platform/modules/budget_service/budget_service.mojom.h"
 #include "url/origin.h"
 
 using content::BrowserThread;
@@ skipping 112 matching lines @@
                                blink::mojom::BudgetServiceErrorType error,
                                bool success) {
   // If the call succeeded, write the new reservation into the map.
   if (success && error == blink::mojom::BudgetServiceErrorType::NONE)
     reservation_map_[origin]++;
 
   UMA_HISTOGRAM_BOOLEAN("Blink.BudgetAPI.Reserve", success);
 
   callback.Run(error, success);
 }