struct UnloadedExtensionInfo -> enum UnloadedExtensionInfoReason

extensions/browser/service_worker_manager.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.
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 // A helper class to manage extension service workers. Handles suspending
 // them when the extension is unloaded and removing them when the extension is
 // uninstalled.
 class ServiceWorkerManager : public ExtensionRegistryObserver {
  public:
   explicit ServiceWorkerManager(content::BrowserContext* browser_context);
   ~ServiceWorkerManager() override;
 
  private:
   // ExtensionRegistryObserver:
   void OnExtensionUnloaded(content::BrowserContext* browser_context,
                            const Extension* extension,
-                           UnloadedExtensionInfo::Reason reason) override;
+                           UnloadedExtensionReason reason) override;
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const Extension* extension,
                               extensions::UninstallReason reason) override;
 
   content::BrowserContext* browser_context_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerManager);
 };
 
 }  // namespace extensions