{CSS,XSL}StyleSheetResource should mark their clients as finished on checkNotify

third_party/WebKit/LayoutTests/http/tests/loading/resources/no-cache-xslt.php

+<?php
+$etag = "must-have-some-etag";
+if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
+    header("HTTP/1.0 304 Not Modified");
+    die;
+}
+header("ETag: " . $etag);
+header("Cache-Control: no-cache");
+header("Content-Type: text/xsl");
+print("<?xml version=\"1.0\"?>");
+?>
+<xsl:stylesheet version="1.0"
+                xmlns:xhtml="http://www.w3.org/1999/xhtml"
+                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+
+<xsl:template match="*">
+  <xsl:copy>
+    <xsl:copy-of select="@*" />
+    <xsl:apply-templates select="node()" />
+  </xsl:copy>
+</xsl:template>
+
+<xsl:template match="xhtml:div[@id='markgreen']">
+  <xsl:copy>
+    <xsl:copy-of select="@*" />
+    <xsl:attribute name="style">
+      <xsl:value-of select="'color: green;'" />
+    </xsl:attribute>
+    <xsl:apply-templates select="node()" />
+  </xsl:copy>
+</xsl:template>
+</xsl:stylesheet>