b=495959 dynamic text input height reftest

layout/reftests/forms/input-text-dynamic-height-1-ref.xul

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin/"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+	xmlns:html="http://www.w3.org/1999/xhtml">
+  <hbox align="stretch">
+    <box style="height: 5em"/>
+    <html:input value="YO"/>
+  </hbox>
+</window>

layout/reftests/forms/input-text-dynamic-height-1.xul

@@ -0,0 +1,23 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin/"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+	xmlns:html="http://www.w3.org/1999/xhtml"
+	onload="onLoad();">
+  <script type="application/javascript">
+<![CDATA[
+    function onLoad()
+    {
+      var adjust = document.getElementById("adjust");
+      flush();
+      adjust.style.height = "5em";
+    }
+
+    function flush() { document.documentElement.getBoundingClientRect(); }
+
+]]>
+  </script>
+  <hbox align="stretch">
+    <box id="adjust"/>
+    <html:input id="input" value="YO"/>
+  </hbox>
+</window>