struct UnloadedExtensionInfo -> enum UnloadedExtensionInfoReason

chrome/browser/extensions/user_script_listener.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_USER_SCRIPT_LISTENER_H_
 #define CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_LISTENER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 95 matching lines @@
   // content::NotificationObserver
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // ExtensionRegistryObserver:
   void OnExtensionLoaded(content::BrowserContext* browser_context,
                          const Extension* extension) override;
   void OnExtensionUnloaded(content::BrowserContext* browser_context,
                            const Extension* extension,
-                           UnloadedExtensionInfo::Reason reason) override;
+                           UnloadedExtensionReason reason) override;
   void OnShutdown(ExtensionRegistry* registry) override;
 
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(UserScriptListener);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_USER_SCRIPT_LISTENER_H_