Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/extension_install_ui_default.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 CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_UI_DEFAULT_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_UI_DEFAULT_H_
-#pragma once
 
 #include "chrome/browser/extensions/extension_install_ui.h"
 
 class InfoBarDelegate;
 class Profile;
 class TabContents;
 
 class ExtensionInstallUIDefault : public ExtensionInstallUI {
  public:
   explicit ExtensionInstallUIDefault(Profile* profile);
@@ skipping 30 matching lines @@
   bool previous_using_native_theme_;
 
   // Whether to show an installed bubble on app install, or use the default
   // action of opening a new tab page.
   bool use_app_installed_bubble_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExtensionInstallUIDefault);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_UI_DEFAULT_H_