Add %TypedArray% to proto chain

test/mjsunit/regress/regress-typedarray-length.js

Index: test/mjsunit/regress/regress-typedarray-length.js
diff --git a/test/mjsunit/regress/regress-typedarray-length.js b/test/mjsunit/regress/regress-typedarray-length.js
index cae55731f921ced9e26218d1b47631867aa71c30..a5b6cbf347e4cad9baf830906def2a1f41919f89 100644
--- a/test/mjsunit/regress/regress-typedarray-length.js
+++ b/test/mjsunit/regress/regress-typedarray-length.js
@@ -71,14 +71,6 @@ assertEquals(undefined, get(a));
   assertEquals(undefined, get(a));
 })();
 
-// Ensure we cannot delete length, byteOffset, byteLength.
-assertTrue(Int32Array.prototype.hasOwnProperty("length"));
-assertTrue(Int32Array.prototype.hasOwnProperty("byteOffset"));
-assertTrue(Int32Array.prototype.hasOwnProperty("byteLength"));
-assertFalse(delete Int32Array.prototype.length);
-assertFalse(delete Int32Array.prototype.byteOffset);
-assertFalse(delete Int32Array.prototype.byteLength);
-
 a = new Int32Array(100);
 
 get = function(a) {
@@ -110,3 +102,11 @@ assertEquals(0, get(a));
 assertEquals(0, get(a));
 %OptimizeFunctionOnNextCall(get);
 assertEquals(0, get(a));
+
+// Ensure we can delete length, byteOffset, byteLength.
+assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("length"));

[arv (Not doing code reviews), 2015/06/16 16:24:49]

Maybe add tests that check the descriptor instead?

+assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("byteOffset"));
+assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("byteLength"));
+assertTrue(delete Int32Array.prototype.__proto__.length);
+assertTrue(delete Int32Array.prototype.__proto__.byteOffset);
+assertTrue(delete Int32Array.prototype.__proto__.byteLength);