Upgrade Number constructor to ES6.

test/mjsunit/parse-int-float.js

Index: test/mjsunit/parse-int-float.js
diff --git a/test/mjsunit/parse-int-float.js b/test/mjsunit/parse-int-float.js
index 5a9b6f33ccb59aea61ab7e080a8c2abec5b8389e..a0f50392303f80ef7f54f588174a0d71879c3ea0 100644
--- a/test/mjsunit/parse-int-float.js
+++ b/test/mjsunit/parse-int-float.js
@@ -114,3 +114,12 @@ assertEquals(state, "throwingString");
 state = null;
 try { parseInt(throwingString, throwingRadix); } catch (e) {}
 assertEquals(state, "throwingString");
+
+// And finally, check that the Harmony additions to the Number
+// constructor is available:
+assertTrue("parseInt" in Number);
+assertTrue("parseFloat" in Number);
+assertSame( Number.parseInt, parseInt);
+assertSame(Number.parseFloat, parseFloat);
+assertEquals(Number.parseFloat('0.1'), parseFloat('0.1'));
+assertEquals(Number.parseInt('0xea'), parseInt('0xEA'));