struct UnloadedExtensionInfo -> enum UnloadedExtensionInfoReason

extensions/browser/extension_registry_observer.h

Index: extensions/browser/extension_registry_observer.h
diff --git a/extensions/browser/extension_registry_observer.h b/extensions/browser/extension_registry_observer.h
index 2b984651e18314c47c4d22fca3008bcae820cf60..a7a9e9bfff37ce8530c6a30df92cf93d273b12fa 100644
--- a/extensions/browser/extension_registry_observer.h
+++ b/extensions/browser/extension_registry_observer.h
@@ -16,7 +16,6 @@ namespace extensions {
 
 class Extension;
 class ExtensionRegistry;
-struct UnloadedExtensionInfo;
 
 // Observer for ExtensionRegistry. Exists in a separate header file to reduce
 // the include file burden for typical clients of ExtensionRegistry.
@@ -40,7 +39,7 @@ class ExtensionRegistryObserver {
   // member of one of the other sets, like disabled, blacklisted or terminated.
   virtual void OnExtensionUnloaded(content::BrowserContext* browser_context,
                                    const Extension* extension,
-                                   UnloadedExtensionInfo::Reason reason) {}
+                                   UnloadedExtensionReason reason) {}
 
   // Called when |extension| is about to be installed. |is_update| is true if
   // the installation is the result of it updating, in which case |old_name| is