Remove #pragma once from content

content/shell/shell.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_SHELL_SHELL_H_
 #define CONTENT_SHELL_SHELL_H_
 
-#pragma once
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_piece.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "ipc/ipc_channel.h"
@@ skipping 175 matching lines @@
   static std::vector<Shell*> windows_;
 
   // True if the destructur of Shell should post a quit closure on the current
   // message loop if the destructed Shell object was the last one.
   static bool quit_message_loop_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_H_