Part one of Converting DOMList types like FooList to List<Foo>.

tests/html/client_rect_test.dart

Index: tests/html/client_rect_test.dart
===================================================================
--- tests/html/client_rect_test.dart	(revision 0)
+++ tests/html/client_rect_test.dart	(revision 0)
@@ -0,0 +1,27 @@
+#library('ClientRectTest');
+#import('../../pkg/unittest/unittest.dart');
+#import('../../pkg/unittest/html_config.dart');
+#import('dart:html');
+
+main() {
+
+  insertTestDiv() {
+    var element = new Element.tag('div');
+    element.innerHTML = @'''
+    A large block of text should go here. Click this
+    block of text multiple times to see each line
+    highlight with every click of the mouse button.
+    ''';
+    document.body.nodes.add(element);
+    return element;
+  }
+
+  useHtmlConfiguration();
+
+   test("ClientRectList test", () {
+    insertTestDiv();
+    var range = document.createRange();
+    List<ClientRect> rects = range.getClientRects();
+    Expect.isTrue(rects is List<ClientRect>);
+  });
+}