[strong] Deprecate ellisions

test/mjsunit/strong/arrays.js

Index: test/mjsunit/strong/arrays.js
diff --git a/test/mjsunit/strong/arrays.js b/test/mjsunit/strong/arrays.js
new file mode 100644
index 0000000000000000000000000000000000000000..b9e4fad357d9f6b4091db45ed6001c10f012838b
--- /dev/null
+++ b/test/mjsunit/strong/arrays.js
@@ -0,0 +1,12 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --strong-mode
+
+(function NoEllisions() {
+  assertThrows("'use strong'; [,]", SyntaxError);
+  assertThrows("'use strong'; [,3]", SyntaxError);
+  assertThrows("'use strong'; [3,,4]", SyntaxError);
+  assertTrue(eval("'use strong'; [3,] !== [3,4,]"));
+})();