Rename URLUtils interface as HTMLHyperlinkElementUtils and update.

third_party/WebKit/Source/core/dom/URL.idl

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2012 Motorola Mobility Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 25 matching lines @@
     // crbug.com/493908
     // static USVString domainToASCII(USVString domain);
     // static USVString domainToUnicode(USVString domain);
 
     // TODO(philipj): This should be in a partial interface definition:
     // File API
     // https://w3c.github.io/FileAPI/#creating-revoking
     // TODO(philipj): The return type should not be nullable.
     [RaisesException, CallWith=ExecutionContext] static DOMString? createObjectURL(Blob blob);
     [CallWith=ExecutionContext] static void revokeObjectURL(DOMString url);
+
+    // TODO(sof): 'stringifier' entails an enumerable toString(),

[philipj_slow, 2016/04/19 12:40:00]

There are a few cases of "[NotEnumerable] stringifier" already, the one in
DOMTokenList with a FIXME even. If ImplementedAs works together with
stringifier, then using that would be a teeny bit nicer I think. You just moved
this code, so you pick :)

[sof, 2016/04/19 12:46:03]

That alternative doesn't work I'm afraid with
https://codereview.chromium.org/1901983002 in scope, so keeping it as-is.

[philipj_slow, 2016/04/19 12:52:25]

Acknowledged.

+    //   http://heycam.github.io/webidl/#es-stringifier
+    // something URL currently doesn't provide. Switch it over to being
+    // enumerable (http://crbug.com/306606).
+    //
+    // Until that time, do not use 'stringifier'.
+    // stringifier attribute USVString href;
+    attribute USVString href;
+    [NotEnumerable, ImplementedAs=href] USVString toString();
+
+    readonly attribute USVString origin;
+
+    attribute USVString protocol;
+    attribute USVString username;
+    attribute USVString password;
+    attribute USVString host;
+    attribute USVString hostname;
+    attribute USVString port;
+    attribute USVString pathname;
+    attribute USVString search;
     readonly attribute URLSearchParams searchParams;
+    attribute USVString hash;
 };
 
-URL implements URLUtils;