Revert recent changes to indexeddb_4_test.

tests/html/indexeddb_4_test.dart

 #library('IndexedDB4Test');
 #import('../../lib/unittest/unittest.dart');
 #import('../../lib/unittest/html_config.dart');
 #import('dart:html');
 
 // Test for IDBKeyRange and IDBCursor.
 
 final String DB_NAME = 'Test';
 final String STORE_NAME = 'TEST';
 final String VERSION = '1';
@@ skipping 45 matching lines @@
     guardAsync(() {
       Expect.fail('IndexedDB failure: $message');
     });
   };
 
   testRange(range, expectedFirst, expectedLast) {
     IDBTransaction txn = db.transaction(STORE_NAME, 'readonly');
     IDBObjectStore objectStore = txn.objectStore(STORE_NAME);
     IDBRequest cursorRequest = objectStore.openCursor(range);
     int itemCount = 0;
-    num firstKey = null;
-    num lastKey = null;
+    int firstKey = null;
+    int lastKey = null;
     cursorRequest.on.success.add(expectAsync1((e) {
       var cursor = e.target.result;
       if (cursor != null) {
         if (firstKey == null) firstKey = cursor.key;
         lastKey = cursor.key;
         itemCount += 1;
-        Expect.equals('Item ${cursor.key.toStringAsFixed(0)}', cursor.value);
+        Expect.equals('Item ${cursor.key}', cursor.value);
         cursor.continueFunction();
       } else {
         // Done
         Expect.equals(expectedFirst, firstKey);
         Expect.equals(expectedLast, lastKey);
         if (expectedFirst == null) {
           Expect.equals(0, itemCount);
         } else {
           Expect.equals(expectedLast - expectedFirst + 1, itemCount);
         }
@@ skipping 51 matching lines @@
   test('upper1', test_.upper1);
   test('upper2', test_.upper2);
   test('upper3', test_.upper3);
 
   test('bound1', test_.bound1);
   test('bound2', test_.bound2);
   test('bound3', test_.bound3);
   test('bound4', test_.bound4);
   test('bound5', test_.bound5);
 }