Change the default implementation of ExtensionFunction::HasPermission to use

extensions/browser/event_router.cc

Index: extensions/browser/event_router.cc
diff --git a/extensions/browser/event_router.cc b/extensions/browser/event_router.cc
index fd39a7b64e0472f117e1663df1fefeb0d60ff3fd..7c00c6aef713770b9f465db67b772343784dad2d 100644
--- a/extensions/browser/event_router.cc
+++ b/extensions/browser/event_router.cc
@@ -540,6 +540,8 @@ void EventRouter::DispatchEventToProcess(const std::string& extension_id,
   BrowserContext* listener_context = process->GetBrowserContext();
   ProcessMap* process_map = ProcessMap::Get(listener_context);
 
+  // TODO(kalman): Convert this method to use ProcessMap::GuessContextType.
+
   const Extension* extension =
       ExtensionRegistry::Get(browser_context_)->enabled_extensions().GetByID(
           extension_id);