Convert Service Worker layout tests to W3C testharness-style tests

LayoutTests/http/tests/serviceworker/resources/indexeddb-worker.js

+var port;
+self.addEventListener('message', function(e) {
+    var message = e.data;
+    if ('port' in message) {
+        port = message.port;
+        doIndexedDBTest();
+    }
+});
+function send(message) {

[dominicc (has gone to gerrit), 2014/04/09 20:09:08]

Add a blank line.

[dominicc (has gone to gerrit), 2014/04/09 20:09:08]

I feel like this would be simpler if port, send are just local to the event
handler and passed to doIndexedDBTest, but up to you, I realize that might be
excessive tinkering.

[jsbell, 2014/04/09 23:04:40]

Good suggestion. Originally the worker was much chattier.

+    if (port) port.postMessage(message);

[dominicc (has gone to gerrit), 2014/04/09 20:09:08]

Line break?

[jsbell, 2014/04/09 23:04:40]

Done.

+}
+
+function doIndexedDBTest() {
+    var delete_request = indexedDB.deleteDatabase('db');
+    delete_request.onsuccess = function() {
+        var open_request = indexedDB.open('db');
+        open_request.onupgradeneeded = function() {
+            var db = open_request.result;
+            db.createObjectStore('store');
+        };
+        open_request.onsuccess = function() {
+            var db = open_request.result;
+            var tx = db.transaction('store', 'readwrite');
+            var store = tx.objectStore('store');
+            store.put('value', 'key');
+            tx.oncomplete = function() {
+                send('done');
+            };
+        };
+    };
+}