test renaming overhaul: step 4 client tests

tests/dom/utils.dart

 #library('TestUtils');
 
 /**
  * Verifies that [actual] has the same graph structure as [expected].
  * Detects cycles and DAG structure in Maps and Lists.
  */
 verifyGraph(expected, actual) {
   var eItems = [];
   var aItems = [];
 
@@ skipping 41 matching lines @@
         }
       }
       return;
     }
 
     Expect.fail('Unhandled type: $expected');
   }
 
   walk('', expected, actual);
 }