Removing more dom_ methods.

samples/third_party/dromaeo/tests/dom-traverse-html.dart

Index: samples/third_party/dromaeo/tests/dom-traverse-html.dart
diff --git a/samples/third_party/dromaeo/tests/dom-traverse-html.dart b/samples/third_party/dromaeo/tests/dom-traverse-html.dart
index c4e224e002165c0f483768a7f684a111f3abe9ab..b27e92eb7e6d1f90c834192c3b6db9ddcc97aea3 100644
--- a/samples/third_party/dromaeo/tests/dom-traverse-html.dart
+++ b/samples/third_party/dromaeo/tests/dom-traverse-html.dart
@@ -34,7 +34,7 @@ void main() {
       document.body.append(div);
     })
     .test('firstChild', () {
-      final nodes = document.body.$dom_childNodes;
+      final nodes = document.body;

[blois, 2013/08/27 16:08:10]

I don't think this is a correct translation.

[Emily Fortuna, 2013/08/27 22:48:43]

You can index into body to access all of the childNodes just as if you'd
accessed them explicitly. See the diff here:

https://codereview.chromium.org/23189014/diff/3001/sdk/lib/html/dart2js/html_...

-  Node operator[](int index) => _this.$dom_childNodes[index];
+  Node operator[](int index) => _this._childNodes[index];

       final nl = nodes.length;
 
       for (int i = 0; i < num; i++) {
@@ -48,7 +48,7 @@ void main() {
       }
     })
     .test('lastChild', () {
-      final nodes = document.body.$dom_childNodes;
+      final nodes = document.body;
       final nl = nodes.length;
 
       for (int i = 0; i < num; i++) {
@@ -81,7 +81,7 @@ void main() {
     })
     .test('childNodes', () {
       for (int i = 0; i < num; i++) {
-        final nodes = document.body.$dom_childNodes;
+        final nodes = document.body;
         for (int j = 0; j < nodes.length; j++) {
           ret = nodes[j];
         }