Remove #pragma once from content

content/browser/web_contents/web_contents_view_gtk.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_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_
-#pragma once
 
 #include <gtk/gtk.h>
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "content/port/browser/render_view_host_delegate_view.h"
 #include "content/public/browser/web_contents_view.h"
 #include "ui/base/gtk/focus_store_gtk.h"
@@ skipping 115 matching lines @@
   // The size we want the view to be.  We keep this in a separate variable
   // because resizing in GTK+ is async.
   gfx::Size requested_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewGtk);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_