Update web-platform-tests

third_party/WebKit/LayoutTests/imported/wpt/IndexedDB/transaction-lifetime-empty.html

Index: third_party/WebKit/LayoutTests/imported/wpt/IndexedDB/transaction-lifetime-empty.html
diff --git a/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html b/third_party/WebKit/LayoutTests/imported/wpt/IndexedDB/transaction-lifetime-empty.html
similarity index 92%
copy from third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
copy to third_party/WebKit/LayoutTests/imported/wpt/IndexedDB/transaction-lifetime-empty.html
index d6f5f71821ba5320ab5004516fca35469d5918b4..50e552ed9359a2bf299ddf1ae5a3390cd1ed7d10 100644
--- a/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
+++ b/third_party/WebKit/LayoutTests/imported/wpt/IndexedDB/transaction-lifetime-empty.html
@@ -2,9 +2,13 @@
 <title>IndexedDB: Commit ordering of empty transactions</title>
 <script src='../../resources/testharness.js'></script>
 <script src='../../resources/testharnessreport.js'></script>
-<script src='resources/testharness-helpers.js'></script>
+<script src='support.js'></script>
 <script>
 
+// Call with a test object and array of expected values. Returns a
+// function to call with each actual value. Once the expected number
+// of values is seen, asserts that the value orders match and completes
+// the test.
 function expect(t, expected) {
     var results = [];
     return result => {