Remove #pragma once from content

content/renderer/websharedworkerrepository_impl.h

 // Copyright (c) 2010 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_RENDERER_WEBSHAREDWORKERREPOSITORY_IMPL_H_
 #define CONTENT_RENDERER_WEBSHAREDWORKERREPOSITORY_IMPL_H_
-#pragma once
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSharedWorkerRepository.h"
 
 #include "base/hash_tables.h"
 
 namespace WebKit {
 class WebSharedWorker;
 }
 
 class WebSharedWorkerRepositoryImpl : public WebKit::WebSharedWorkerRepository {
  public:
   WebSharedWorkerRepositoryImpl();
   virtual ~WebSharedWorkerRepositoryImpl();
 
   virtual void addSharedWorker(WebKit::WebSharedWorker*, DocumentID document);
   virtual void documentDetached(DocumentID document);
 
   // Returns true if the document has created a SharedWorker (used by the
   // WebKit code to determine if the document can be suspended).
   virtual bool hasSharedWorkers(DocumentID document);
 
  private:
   // The set of documents that have created a SharedWorker.
   typedef base::hash_set<DocumentID> DocumentSet;
   DocumentSet shared_worker_parents_;
 };
 
 #endif  // CONTENT_RENDERER_WEBSHAREDWORKERREPOSITORY_IMPL_H_