Add initial parser support for harmony iteration

test/mjsunit/harmony/iteration-syntax.js

Index: test/mjsunit/harmony/iteration-syntax.js
diff --git a/test/mjsunit/regress/regress-2489.js b/test/mjsunit/harmony/iteration-syntax.js
similarity index 52%
copy from test/mjsunit/regress/regress-2489.js
copy to test/mjsunit/harmony/iteration-syntax.js
index 882c4f794a88e24d1d64e86a466b27c39f51e625..21149c04bc99108beb802fcfd65a253a558aae42 100644
--- a/test/mjsunit/regress/regress-2489.js
+++ b/test/mjsunit/harmony/iteration-syntax.js
@@ -25,26 +25,41 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Flags: --harmony-iteration --harmony-scoping
+
+// Test for-of syntax.
 
 "use strict";
 
-function f(a, b) {
-  return g("c", "d");
-}
-
-function g(a, b) {
-  g.constructor.apply(this, arguments);
-}
-
-g.constructor = function(a, b) {
-  assertEquals("c", a);
-  assertEquals("d", b);
-}
-
-f("a", "b");
-f("a", "b");
-%OptimizeFunctionOnNextCall(f);
-f("a", "b");
-g.x = "deopt";
-f("a", "b");
+function f() { for (x of y) { } }
+function f() { for (var x of y) { } }
+function f() { for (let x of y) { } }
+
+assertThrows("function f() { for (x of) { } }", SyntaxError);
+assertThrows("function f() { for (x of y z) { } }", SyntaxError);
+assertThrows("function f() { for (x of y;) { } }", SyntaxError);
+
+assertThrows("function f() { for (var x of) { } }", SyntaxError);
+assertThrows("function f() { for (var x of y z) { } }", SyntaxError);
+assertThrows("function f() { for (var x of y;) { } }", SyntaxError);
+
+assertThrows("function f() { for (let x of) { } }", SyntaxError);
+assertThrows("function f() { for (let x of y z) { } }", SyntaxError);
+assertThrows("function f() { for (let x of y;) { } }", SyntaxError);
+
+assertThrows("function f() { for (of y) { } }", SyntaxError);
+assertThrows("function f() { for (of of) { } }", SyntaxError);
+assertThrows("function f() { for (var of y) { } }", SyntaxError);
+assertThrows("function f() { for (var of of) { } }", SyntaxError);
+assertThrows("function f() { for (let of y) { } }", SyntaxError);
+assertThrows("function f() { for (let of of) { } }", SyntaxError);
+
+// Alack, this appears to be valid.
+function f() { for (of of y) { } }
+function f() { for (let of of y) { } }
+function f() { for (var of of y) { } }
+
+// This too, of course.
+function f() { for (of in y) { } }
+function f() { for (var of in y) { } }
+function f() { for (let of in y) { } }