chromium/src/third_party/blink/web_tests/external/wpt/FileAPI/support/historical-serviceworker.js - manifest_repos/chromium_src - Git at Google

 importScripts('/resources/testharness.js');

 test(() => {
   assert_false('FileReaderSync' in self);
 }, '"FileReaderSync" should not be supported in service workers');
	importScripts('/resources/testharness.js');

	test(() => {
	assert_false('FileReaderSync' in self);
	}, '"FileReaderSync" should not be supported in service workers');