Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/extension_debugger_api.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.
 
 // Defines the Chrome Extensions Debugger API functions for attaching debugger
 // to the page.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_DEBUGGER_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_DEBUGGER_API_H_
-#pragma once
 
 #include <string>
 
 #include "chrome/browser/extensions/extension_function.h"
 
 // Base debugger function.
 
 class ExtensionDevToolsClientHost;
 
 namespace base {
@@ skipping 54 matching lines @@
   void SendResponseBody(base::DictionaryValue* dictionary);
 
  protected:
   virtual ~SendCommandDebuggerFunction();
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_DEBUGGER_API_H_