Revert of [regexp] Create property on result for each named capture

test/mjsunit/harmony/regexp-named-captures.js

Index: test/mjsunit/harmony/regexp-named-captures.js
diff --git a/test/mjsunit/harmony/regexp-named-captures.js b/test/mjsunit/harmony/regexp-named-captures.js
index d5274fe094c3d4e071a5408c7d6e6195c6f66c01..ced8e4b2f6ba330698f43bbcad1a5a7afc72c82c 100644
--- a/test/mjsunit/harmony/regexp-named-captures.js
+++ b/test/mjsunit/harmony/regexp-named-captures.js
@@ -18,15 +18,15 @@
 assertThrows("/\\k<a>(?<ab>a)/u");  // Invalid reference.
 
 // Fallback behavior in non-unicode mode.
-assertThrows("/(?<>a)/", SyntaxError);
-assertThrows("/(?<aa)/", SyntaxError);
-assertThrows("/(?<42a>a)/", SyntaxError);
-assertThrows("/(?<:a>a)/", SyntaxError);
-assertThrows("/(?<a:>a)/", SyntaxError);
-assertThrows("/(?<a>a)(?<a>a)/", SyntaxError);
-assertThrows("/(?<a>a)(?<b>b)(?<a>a)/", SyntaxError);
-assertThrows("/(?<a>a)\\k<ab>/", SyntaxError);
-assertThrows("/(?<ab>a)\\k<a>/", SyntaxError);
+assertThrows("/(?<>a)/");
+assertThrows("/(?<aa)/");
+assertThrows("/(?<42a>a)/");
+assertThrows("/(?<:a>a)/");
+assertThrows("/(?<a:>a)/");
+assertThrows("/(?<a>a)(?<a>a)/");
+assertThrows("/(?<a>a)(?<b>b)(?<a>a)/");
+assertThrows("/(?<a>a)\\k<ab>/");
+assertThrows("/(?<ab>a)\\k<a>/");
 
 assertEquals(["k<a>"], "xxxk<a>xxx".match(/\k<a>/));
 assertEquals(["k<a"], "xxxk<a>xxx".match(/\k<a/));
@@ -74,29 +74,3 @@
 // Reference before group.
 assertEquals(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/u));
 assertEquals(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/u));
-
-// Reference properties.
-assertEquals("a", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").group.a);
-assertEquals("b", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").group.b);
-assertEquals(undefined, /(?<a>a)(?<b>b)\k<a>/u.exec("aba").group.c);
-assertFalse(/(?<a>a)(?<b>b)\k<a>/u.exec("aba").group.hasOwnProperty("c"));
-assertEquals(undefined, /(?<a>a)(?<b>b)\k<a>|(?<c>c)/u.exec("aba").group.c);
-assertTrue(/(?<a>a)(?<b>b)\k<a>|(?<c>c)/u
-              .exec("aba").group.hasOwnProperty("c"));
-
-// Unicode names.
-assertEquals("a", /(?<π>a)/u.exec("bab").group.π);
-assertEquals("a", /(?<\u{03C0}>a)/u.exec("bab").group.\u03C0);
-assertEquals("a", /(?<$>a)/u.exec("bab").group.$);
-assertEquals("a", /(?<_>a)/u.exec("bab").group._);
-assertEquals("a", /(?<$𐒤>a)/u.exec("bab").group.$𐒤);
-assertEquals("a", /(?<_\u200C>a)/u.exec("bab").group._\u200C);
-assertEquals("a", /(?<_\u200D>a)/u.exec("bab").group._\u200D);
-assertEquals("a", /(?<ಠ_ಠ>a)/u.exec("bab").group.ಠ_ಠ);
-assertThrows('/(?<❤>a)/u', SyntaxError);
-assertThrows('/(?<𐒤>a)/u', SyntaxError);  // ID_Continue but not ID_Start.
-
-// Capture name conflicts.
-assertThrows(() => /(?<__proto__>a)/u, SyntaxError);
-assertEquals("a", /(?<__proto_>a)/u.exec("a").group.__proto_);
-assertEquals("a", /(?<__proto___>a)/u.exec("a").group.__proto___);