Remove #pragma once from content

content/public/browser/javascript_dialogs.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_PUBLIC_BROWSER_JAVASCRIPT_DIALOGS_H_
 #define CONTENT_PUBLIC_BROWSER_JAVASCRIPT_DIALOGS_H_
-#pragma once
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
 #include "content/public/common/javascript_message_type.h"
 #include "googleurl/src/gurl.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ skipping 30 matching lines @@
   // Cancels all pending dialogs and resets any saved JavaScript dialog state
   // for the given WebContents.
   virtual void ResetJavaScriptState(WebContents* web_contents) = 0;
 
   virtual ~JavaScriptDialogCreator() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_JAVASCRIPT_DIALOGS_H_