Select when disabled should not allow value change and popup is disabled

LayoutTests/fast/forms/select/select-disabled.html

Index: LayoutTests/fast/forms/select/select-disabled.html
diff --git a/LayoutTests/fast/forms/select/select-disabled.html b/LayoutTests/fast/forms/select/select-disabled.html
index 563edc9d17a61d488c170ccee7efdd9d5b8a7c44..5ba1ec39365a6a631652a054b4507614cee75803 100644
--- a/LayoutTests/fast/forms/select/select-disabled.html
+++ b/LayoutTests/fast/forms/select/select-disabled.html
@@ -17,6 +17,14 @@
 <option>c</option>
 </select>
 
+<select id=select3>
+<option selected>a</option>
+<option>b</option>
+<option>c</option>
+</select>
+
+<input id="text"></input>
+
 <script>
 description('Tests that user cannot change disabled select by keyboard');
 
@@ -42,6 +50,17 @@ shouldBeEqualToString('select2.value', 'b');
 eventSender.keyDown('c');
 shouldBeEqualToString('select2.value', 'b');
 
+var select3 = document.getElementById('select3');
+select3.focus();
+eventSender.keyDown('downArrow');
+shouldBeEqualToString('select3.value', 'b');
+eventSender.keyDown(' ');
+shouldBeTrue("internals.isSelectPopupVisible(select3)");
+select3.disabled = true;
+shouldBeFalse("internals.isSelectPopupVisible(select3)");
+eventSender.keyDown('downArrow');
+shouldBeEqualToString('select3.value', 'b');
+
 </script>
 </body>
 </html>