Update from https://crrev.com/328418

third_party/libxml/src/xmlIO.c

 /*
  * xmlIO.c : implementation of the I/O interfaces used by the parser
  *
  * See Copyright for the status of this software.
  *
  * daniel@veillard.com
  *
  * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char
  */
 
@@ skipping 67 matching lines @@
 #      endif
 #    endif
 #  endif
 #endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/parser.h>
 #include <libxml/parserInternals.h>
 #include <libxml/xmlIO.h>
 #include <libxml/uri.h>
-#include <libxml/nanohttp.h>
-#include <libxml/nanoftp.h>
 #include <libxml/xmlerror.h>
 #ifdef LIBXML_CATALOG_ENABLED
 #include <libxml/catalog.h>
 #endif
 #include <libxml/globals.h>
 
 /* #define VERBOSE_FAILURE */
 /* #define DEBUG_EXTERNAL_ENTITIES */
 /* #define DEBUG_INPUT */
 
@@ skipping 3885 matching lines @@
         }
     }
     input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt);
     if (resource != (xmlChar *) URL)
         xmlFree(resource);
     return(input);
 }
 
 #define bottom_xmlIO
 #include "elfgcchack.h"