Added Dartium changes onto 45.0.2454.104

LayoutTests/dart/dom/Console.dart

+import "package:unittest/unittest.dart";
+import "package:unittest/html_config.dart";
+import 'dart:html';
+
+main() {
+  useHtmlConfiguration(true);
+  test('Console', () {
+    window.console.log("Test message.");
+    window.console.log(42);
+    window.console.log(new TestObjectWithToString());
+    window.console.log(true);
+  });
+}
+
+class TestObjectWithToString {
+  String toString() => "TestObject instance";
+}