bug?

third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/test.js

+function receive_message()
+{
+  return new Promise(function(resolve) {
+    self.onmessage = function(e) {
+      console.log(e);
+      resolve();
+    };
+  });
+}
+/*
+self.oninstall = function(e) {
+  e.waitUntil(receive_message());
+};
+*/
+self.onactivate = function(e) {
+  e.waitUntil(receive_message());

[nhiroki, 2016/02/08 04:54:02]

A promise returned by receive_message() is never settled because iframe cannot
finish and postMessage() is not called.

+};