mFragmentRoot(nsnull)
mFragmentRoot(nsnull), mStyleSheetCount(0), mCSSLoader(nsnull)
XULContentSinkImpl::XULContentSinkImpl()    : mDocumentURL(nsnull),      mDataSource(nsnull),      mContextStack(nsnull),      mText(nsnull),      mTextLength(0),      mTextSize(0),      mConstrainSize(PR_TRUE),      mHaveSetRootResource(PR_FALSE),      mDocument(nsnull),      mParser(nsnull),      mFragmentRoot(nsnull){    NS_INIT_REFCNT();    if (gRefCnt++ == 0) {        nsresult rv;        rv = nsServiceManager::GetService(kRDFServiceCID,                                          kIRDFServiceIID,                                          (nsISupports**) &gRDFService);        NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get RDF service");        if (NS_SUCCEEDED(rv)) {            gRDFService->GetResource(kURIRDF_child,      &kRDF_child);            gRDFService->GetResource(kURIRDF_instanceOf, &kRDF_instanceOf);            gRDFService->GetResource(kURIRDF_type,       &kRDF_type);            gRDFService->GetResource(kURIXUL_element,    &kXUL_element);        }    }#ifdef PR_LOGGING    if (! gLog)        gLog = PR_NewLogModule("nsXULContentSink");#endif}