Migrate more tests from blink repository.

test/webkit/fast/js/string-link-expected.txt

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-Test that we properly fill in missing args with "undefined" in JIT code.
+This is a test case for String.prototype.link(href).
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS caller(0) is undefined
-PASS caller(1) is undefined
-PASS caller(2) is undefined
-PASS caller(3) is undefined
-PASS caller(4) is undefined
-PASS caller(5) is undefined
-PASS caller(6) is undefined
-PASS caller(7) is undefined
-PASS caller(8) is undefined
+PASS '_'.link('"') is "<a href=\"&quot;\">_</a>"
+PASS '_'.link('b') is "<a href=\"b\">_</a>"
+PASS '<'.link('b') is "<a href=\"b\"><</a>"
+PASS '_'.link(0x2A) is "<a href=\"42\">_</a>"
+PASS '_'.link('"') is "<a href=\"&quot;\">_</a>"
+PASS '_'.link('" target="_blank') is "<a href=\"&quot; target=&quot;_blank\">_</a>"
+PASS String.prototype.link.call(0x2A, 0x2A) is "<a href=\"42\">42</a>"
+FAIL String.prototype.link.call(undefined) should throw TypeError: Type error. Was <a href="undefined">undefined</a>.
+FAIL String.prototype.link.call(null) should throw TypeError: Type error. Was <a href="undefined">null</a>.
+PASS String.prototype.link.length is 1
 PASS successfullyParsed is true
 
 TEST COMPLETE