Remove #pragma once from content

content/browser/dom_storage/session_storage_namespace_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
 #define CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/session_storage_namespace.h"
 
 class DOMStorageContextImpl;
 
 namespace dom_storage {
 class DomStorageSession;
@@ skipping 25 matching lines @@
  private:
   explicit SessionStorageNamespaceImpl(dom_storage::DomStorageSession* clone);
   virtual ~SessionStorageNamespaceImpl();
 
   scoped_refptr<dom_storage::DomStorageSession> session_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionStorageNamespaceImpl);
 };
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_