Remove #pragma once from content

content/public/browser/worker_service.h

 // Copyright (c) 2011 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WORKER_SERVICE_H_
 #define CONTENT_PUBLIC_BROWSER_WORKER_SERVICE_H_
-#pragma once
 
 #include <vector>
 
 #include "base/process.h"
 #include "content/common/content_export.h"
 
 class GURL;
 
 namespace content {
 
@@ skipping 24 matching lines @@
   // Return information about all the currently running workers.
   virtual std::vector<WorkerInfo> GetWorkers() = 0;
 
   virtual void AddObserver(WorkerServiceObserver* observer) = 0;
   virtual void RemoveObserver(WorkerServiceObserver* observer) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PLUGIN_SERVICE_H_