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--- a/config.tests/xml2/xml2.cpp
+++ b/config.tests/xml2/xml2.cpp
@@ -27,9 +27,6 @@
 ****************************************************************************/
 
 #include <libxml/xmlversion.h>
-#if defined(LIBXML_CATALOG_ENABLED)
-#error "libxml catalog enabled"
-#endif
 #if !defined(LIBXML_ICU_ENABLED)
 #error "libxml icu not enabled"
 #endif
--- a/src/3rdparty/chromium/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
+++ b/src/3rdparty/chromium/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
@@ -28,6 +28,10 @@
 
 #include <libxml/parser.h>
 #include <libxml/parserInternals.h>
+#include <libxml/xmlversion.h>
+#if defined(LIBXML_CATALOG_ENABLED)
+#include <libxml/catalog.h>
+#endif
 #include <libxslt/xslt.h>
 #include <memory>
 #include "core/css/StyleEngine.h"
@@ -538,10 +542,6 @@
 static bool ShouldAllowExternalLoad(const KURL& url) {
   String url_string = url.GetString();
 
-  // libxml should not be configured with catalogs enabled, so it
-  // should not be asking to load default catalogs.
-  CHECK(!IsLibxmlDefaultCatalogFile(url));
-
   // The most common DTD. There isn't much point in hammering www.w3c.org by
   // requesting this URL for every XHTML document.
   if (url_string.StartsWithIgnoringASCIICase("http://www.w3.org/TR/xhtml"))
@@ -646,6 +646,9 @@
   if (did_init)
     return;
 
+#if defined(LIBXML_CATALOG_ENABLED)
+  xmlCatalogSetDefaults(XML_CATA_ALLOW_NONE);
+#endif
   xmlInitParser();
   xmlRegisterInputCallbacks(MatchFunc, OpenFunc, ReadFunc, CloseFunc);
   xmlRegisterOutputCallbacks(MatchFunc, OpenFunc, WriteFunc, CloseFunc);