Adding relList attr to link and anchor element

LayoutTests/fast/dom/relList_on_link.html

Index: LayoutTests/fast/dom/relList_on_link.html
diff --git a/LayoutTests/fast/dom/relList_on_link.html b/LayoutTests/fast/dom/relList_on_link.html
new file mode 100644
index 0000000000000000000000000000000000000000..4b7563a8877e7887631b483dcf4bbea5b4b62e3d
--- /dev/null
+++ b/LayoutTests/fast/dom/relList_on_link.html
@@ -0,0 +1,21 @@
+<link id="linkId" rel="shortcut icon" href="../images/resources/1bit.ico"/>

[Inactive, 2014/07/25 12:55:51]

Please add back the DOCTYPE.

+<script src="../../resources/js-test.js"></script>
+<script>
+description("Checks relList attribute on link element");
+
+var link = document.getElementById('linkId');
+shouldBe("link.relList.__proto__", "DOMTokenList.prototype");
+shouldBeTrue("link.relList.contains('shortcut')");

[Inactive, 2014/07/25 12:55:51]

Same comment about using indexed getter.

+shouldBeTrue("link.relList.contains('icon')");
+shouldBe("link.relList.length", "2");
+shouldBeFalse("link.relList.contains('shortcut1')");
+shouldNotThrow("link.rel = 'nofollow'");
+shouldBe("link.relList.length", "1");
+shouldBeTrue("link.relList.contains('nofollow')");
+shouldBeFalse("link.relList.contains('shortcut')");
+shouldBeFalse("link.relList.contains('icon')");
+shouldNotThrow("link.removeAttribute('rel')");
+shouldBeEmptyString("link.rel");
+shouldBe("link.relList.length", "0");
+shouldBeUndefined("link.relList[0]");
+</script>