Dialog test: Ensure dialog is tall enough to be scrolled.

(cherry picked from commit 144268a)

Author: scottgonzalez

tests/unit/dialog/dialog.html

@@ -52,6 +52,8 @@ <h2 id="qunit-userAgent"></h2>
 	<div id="dialog1"></div>
 	<div id="dialog2"></div>
 	<div id="form-dialog" title="Profile Information">
+		<!-- create a spacer to ensure there's enough space to scroll -->
+		<div style="height: 250px;">...</div>
 		<fieldset>
 			<legend>Please share some personal information</legend>
 			<label for="favorite-animal">Your favorite animal</label><input id="favorite-animal">