Revert "Use symbols instead of hidden properties for i18n markers."

test/mjsunit/test-hidden-string.js

Index: test/mjsunit/test-hidden-string.js
diff --git a/test/mjsunit/regress/regress-357103.js b/test/mjsunit/test-hidden-string.js
similarity index 61%
copy from test/mjsunit/regress/regress-357103.js
copy to test/mjsunit/test-hidden-string.js
index 692729ddb34bd7932e238d74db972b7c81402896..a5d32c839ea38e08abedc2d95542009accdec36c 100644
--- a/test/mjsunit/regress/regress-357103.js
+++ b/test/mjsunit/test-hidden-string.js
@@ -4,11 +4,8 @@
 
 // Flags: --allow-natives-syntax
 
-%SetFlags("--gc-interval=1");
-
-var key = "Huckleberry Finn" + "Tom Sawyer";
 var o = {};
-function f() { o[key] = "Adventures"; }
-
-f();
-f();
+%SetHiddenProperty(o, "test", 1);
+// Create non-internalized ""
+var empty = "a".substring(1, 1);
+assertEquals(undefined, o[empty]);