Check in the libxml roll script.

third_party/libxml/chromium/chromium-issue-683629.patch

Index: third_party/libxml/chromium/chromium-issue-683629.patch
diff --git a/third_party/libxml/chromium/chromium-issue-683629.patch b/third_party/libxml/chromium/chromium-issue-683629.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0d0685003beea9891bafbfabcb67a790b8fecd1d
--- /dev/null
+++ b/third_party/libxml/chromium/chromium-issue-683629.patch
@@ -0,0 +1,16 @@
+Fromdiff --git a/third_party/libxml/src/parser.c b/third_party/libxml/src/parser.c
+index 33786f08354d..745c3da1c72e 100644
+--- a/parser.c
++++ b/parser.c
+@@ -3426,7 +3426,7 @@ xmlParseNameComplex(xmlParserCtxtPtr ctxt) {
+         xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
+         return(NULL);
+     }
+-    if ((*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r')) {
++    if (ctxt->input->cur > ctxt->input->base && (*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r')) {
+         if (ctxt->input->base > ctxt->input->cur - (len + 1)) {
+             return(NULL);
+         }
+-- 
+2.12.2.715.g7642488e1d-goog
+