bindings: Fixes layouttests when moving attributes to prototype chains.

LayoutTests/storage/indexeddb/resources/keypath-intrinsic-properties.js

 if (this.importScripts) {
     importScripts('../../../resources/js-test.js');
     importScripts('shared.js');
 }
 
 description("Test IndexedDB keyPath with intrinsic properties");
 
 indexedDBTest(prepareDatabase, testKeyPaths);
 function prepareDatabase()
 {
@@ skipping 14 matching lines @@
     transaction.onabort = unexpectedAbortCallback;
     store = evalAndLog("store = transaction.objectStore('store')");
 
     for (var i = 0; i < 5; i += 1) {
         var datum = {
             id: 'id#' + i,
             string: Array(i * 2 + 1).join('x'),
             array: Array(i * 3 + 1).join('x').split(/(?:)/),
             blob: new Blob([Array(i * 4 + 1).join('x')], {type: "type " + i})
         };
-        debug("store.put(" + JSON.stringify(datum) + ")");
+        debug("store.put(" + stringifyDOMObject(datum) + ")");
         store.put(datum);
     }
 
     checkStringLengths();
 
     function checkStringLengths() {
         evalAndLog("request = store.index('string length').openCursor()");
         request.onerror = unexpectedErrorCallback;
         request.onsuccess = function (e) {
             cursor = e.target.result;
@@ skipping 41 matching lines @@
             cursor = e.target.result;
             if (cursor) {
                 shouldBe("cursor.key", "cursor.value.blob.type");
                 cursor.continue();
             }
         }
     }
 
     transaction.oncomplete = finishJSTest;
 }