Update dangling markup mitigations.

url/third_party/mozilla/url_parse.h

Index: url/third_party/mozilla/url_parse.h
diff --git a/url/third_party/mozilla/url_parse.h b/url/third_party/mozilla/url_parse.h
index 968578badbb418d457605142a1704d9cbb0f9406..6d40d3f997132981c19d38623ad1942fb23edba7 100644
--- a/url/third_party/mozilla/url_parse.h
+++ b/url/third_party/mozilla/url_parse.h
@@ -177,8 +177,12 @@ struct URL_EXPORT Parsed {
   // the string with the scheme stripped off.
   Component GetContent() const;
 
-  // True if whitespace was removed from the URL during parsing.
-  bool whitespace_removed;
+  // True if the URL's source contained a raw `<` character, and whitespace was
+  // removed from the URL during parsing
+  //
+  // TODO(mkwst): Link this to something in a spec if
+  // https://github.com/whatwg/url/pull/284 lands.
+  bool potentially_dangling_markup;
 
   // This is used for nested URL types, currently only filesystem.  If you
   // parse a filesystem URL, the resulting Parsed will have a nested