Improve Dart Debugger performance and robustness by creating Dart wrappers using the standard SetNa…

LayoutTests/dart/dom/Console.dart

 import "../../../../../dart/pkg/unittest/lib/unittest.dart";
 import "../../../../../dart/pkg/unittest/lib/html_config.dart";
 import 'dart:html';
 
 main() {
   useHtmlConfiguration(true);
   test('Console', () {
     window.console.log("Test message.");
     window.console.log(42);
+    // The object will show up in the console as an interactive object
+    // so a blank line will show up in the Layout Test text output. 
     window.console.log(new TestObjectWithToString());
+    window.console.log(true);
   });
 }
 
 class TestObjectWithToString {
   String toString() => "TestObject instance";
 }