Move web-platform-tests to wpt (part 2 of 2)

third_party/WebKit/LayoutTests/imported/web-platform-tests/webstorage/eventTestHarness.js

-iframe = document.createElement("IFRAME");
-iframe.src = "about:blank";
-document.body.appendChild(iframe);
-iframe.contentWindow.document.body.textContent = "Nothing to see here.";
-
-storageEventList = new Array();
-iframe.contentWindow.onstorage = function(e) {
-    window.parent.storageEventList.push(e);
-};
-
-function runAfterNStorageEvents(callback, expectedNumEvents)
-{
-    countStorageEvents(callback, expectedNumEvents, 0)
-}
-
-function countStorageEvents(callback, expectedNumEvents, times)
-{
-    function onTimeout()
-    {
-        var currentCount = storageEventList.length;
-        if (currentCount == expectedNumEvents) {
-            callback();
-        } else if (currentCount > expectedNumEvents) {
-            msg = "got at least " + currentCount + ", expected only " + expectedNumEvents + " events";
-            callback(msg);
-        } else if (times > 50) {
-            msg = "Timeout: only got " + currentCount + ", expected " + expectedNumEvents + " events";
-            callback(msg);
-        } else {
-            countStorageEvents(callback, expectedNumEvents, times+1);
-        }
-    }
-    setTimeout(onTimeout, 20);
-}
-
-function clearStorage(storageName, callback)
-{
-    if (window[storageName].length === 0) {
-        storageEventList = [];
-        setTimeout(callback, 0);
-    } else {
-        window[storageName].clear();
-        runAfterNStorageEvents(function() {
-            storageEventList = [];
-            callback();
-        }, 1);
-    }
-}
-
-function testStorages(testCallback)
-{
-    testCallback("sessionStorage");
-    var hit = false;
-    add_result_callback(function() {
-        if (!hit) {
-            hit = true;
-            testCallback("localStorage");
-        }
-    });
-}