Adding relList attr to link and anchor element

LayoutTests/fast/dom/relList_on_link-expected.txt

Index: LayoutTests/fast/dom/relList_on_link-expected.txt
diff --git a/LayoutTests/fast/dom/relList_on_link-expected.txt b/LayoutTests/fast/dom/relList_on_link-expected.txt
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+++ b/LayoutTests/fast/dom/relList_on_link-expected.txt
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+Checks relList attribute on link element
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS link.relList.__proto__ is DOMTokenList.prototype
+PASS link.relList.contains('shortcut') is true
+PASS link.relList.contains('icon') is true
+PASS link.relList.length is 2
+PASS link.relList.contains('shortcut1') is false
+PASS link.rel = 'nofollow' did not throw exception.
+PASS link.relList.length is 1
+PASS link.relList.contains('nofollow') is true
+PASS link.relList.contains('shortcut') is false
+PASS link.relList.contains('icon') is false
+PASS link.removeAttribute('rel') did not throw exception.
+PASS link.rel is ""
+PASS link.relList.length is 0
+PASS link.relList[0] is undefined.
+PASS successfullyParsed is true
+
+TEST COMPLETE
+