XSL Transformation working in IE, not in Chrome

I'm having a bit of trouble transforming an xml document using the xsl below. The code works on IE using xmlDoc.transformNode, but the following code does not work in chrome - resultDocument returns null.

var xslString = "<xsl:stylesheet version="1.0" xmlns:xsl="http://ift.tt/tCZ8VR">
      <xsl:template match="options">
        <div id="divAllOpt" class="sDiv" ALL="1" style="FONT-WEIGHT:bold;">
          All
        </div>
        <div id="divGroupOnOpt" class="sDiv" GROUP="1" style="FONT-WEIGHT:bold;">
          Group By
        </div>
        <xsl:apply-templates select="option[. != '']">
          <xsl:sort select="."/>
        </xsl:apply-templates>
      </xsl:template>
      <xsl:template match="option">
        <div class="sDiv">
          <xsl:choose>
            <xsl:when test="@value">
              <xsl:attribute name="VALUE">
                <xsl:value-of select="@value"></xsl:value-of>
              </xsl:attribute>
            </xsl:when>
            <xsl:otherwise>
              <xsl:attribute name="VALUE">
                <xsl:value-of select="."></xsl:value-of>
              </xsl:attribute>
            </xsl:otherwise>
          </xsl:choose>
          <xsl:attribute name="title">
            <xsl:value-of select="."></xsl:value-of>
          </xsl:attribute>
          <xsl:value-of select="."></xsl:value-of>
          <xsl:if test="@count">
            (<xsl:value-of select="@count"></xsl:value-of>)
          </xsl:if>
        </div>
      </xsl:template>
    </xsl:stylesheet>";
var xsltProcessor = new XSLTProcessor();
var xslSheet = new DOMParser().parseFromString(xslString, 'application/xml');
xsltProcessor.importStylesheet(xslSheet);
var resultDocument = xsltProcessor.transformToFragment(xmlDoc.documentElement, document);

The xml document (xmlDoc.documentElement.outerHTML) that I'm trying to transform is as shown below -

"<options>
  <option count="3">ABC</option>
  <option count="8">XYZ</option>
  <option count="32">CVB</option>
  <option count="1">TST</option>
  <option count="2">CNN</option>
</options>"

Any ideas? Thanks.