struct UnloadedExtensionInfo -> enum UnloadedExtensionInfoReason

extensions/browser/extension_user_script_loader.h

 // Copyright 2015 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 EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_
 #define EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_
 
 #include "base/macros.h"
 #include "extensions/browser/extension_registry_observer.h"
 #include "extensions/browser/user_script_loader.h"
@@ skipping 34 matching lines @@
                    const std::set<int>& added_script_ids,
                    LoadScriptsCallback callback) override;
 
   // Updates |hosts_info_| to contain info for each element of
   //  |changed_hosts_|.
   void UpdateHostsInfo(const std::set<HostID>& changed_hosts);
 
   // ExtensionRegistryObserver:
   void OnExtensionUnloaded(content::BrowserContext* browser_context,
                            const Extension* extension,
-                           UnloadedExtensionInfo::Reason reason) override;
+                           UnloadedExtensionReason reason) override;
 
   // Initiates script load when we have been waiting for the extension system
   // to be ready.
   void OnExtensionSystemReady();
 
   // Maps host info needed for localization to a host ID.
   HostsInfo hosts_info_;
 
   // Manages content verification of the loaded user scripts.
   scoped_refptr<ContentVerifier> content_verifier_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   base::WeakPtrFactory<ExtensionUserScriptLoader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUserScriptLoader);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_