service worker: Bump update time even when the script was identical

content/browser/service_worker/embedded_worker_instance.cc

Index: content/browser/service_worker/embedded_worker_instance.cc
diff --git a/content/browser/service_worker/embedded_worker_instance.cc b/content/browser/service_worker/embedded_worker_instance.cc
index 451a612d3ce6c8c4c0db474cdd3931c3fa0e2a2f..26a21bb43e3bd00882b0ae30502513880e7bc75c 100644
--- a/content/browser/service_worker/embedded_worker_instance.cc
+++ b/content/browser/service_worker/embedded_worker_instance.cc
@@ -561,8 +561,9 @@ void EmbeddedWorkerInstance::OnScriptLoaded() {
         duration, source, inflight_start_task_->start_situation());
   }
 
-  FOR_EACH_OBSERVER(Listener, listener_list_, OnScriptLoaded());
   starting_phase_ = SCRIPT_LOADED;
+  FOR_EACH_OBSERVER(Listener, listener_list_, OnScriptLoaded());
+  // |this| may be destroyed by the callback.
 }
 
 void EmbeddedWorkerInstance::OnURLJobCreatedForMainScript() {