Implement ES6 completion semantics (--harmony-completion).

test/mjsunit/es6/block-for.js

Index: test/mjsunit/es6/block-for.js
diff --git a/test/mjsunit/es6/block-for.js b/test/mjsunit/es6/block-for.js
index 420c41e610cce619cdfd7e5a549b2d680979a52b..a54d43490e2f18cdb23141f12f73315ef5f8c49a 100644
--- a/test/mjsunit/es6/block-for.js
+++ b/test/mjsunit/es6/block-for.js
@@ -189,10 +189,10 @@ assertEquals(undefined, eval("for (let i = 0; i < 10; i++) { continue; i; }"));
 assertEquals(0, eval("for (let i = 0; true;) { i; break; }"));
 assertEquals(0, eval("for (const i = 0; true;) { i; break; }"));
 assertEquals(9, eval("for (let i = 0; i < 10; i++) { i; continue; }"));
-assertEquals(3, eval("for (let i = 0; true; i++) { i; if (i >= 3) break; }"));
-assertEquals(2, eval("for (let i = 0; true; i++) { if (i >= 3) break; i; }"));
+assertEquals(3, eval("for (let i = 0; true; i++) { i; if (i >= 3) break; }")); // --harmony-completion: undefined
+assertEquals(2, eval("for (let i = 0; true; i++) { if (i >= 3) break; i; }")); // --harmony-completion: undefined
 assertEquals(
-  2, eval("for (let i = 0; i < 10; i++) { if (i >= 3) continue; i; }"));
+  2, eval("for (let i = 0; i < 10; i++) { if (i >= 3) continue; i; }")); // --harmony-completion: undefined
 assertEquals(undefined, eval("foo: for (let i = 0; true;) { break foo; }"));
 assertEquals(undefined, eval("foo: for (const i = 0; true;) { break foo; }"));
 assertEquals(3, eval("foo: for (let i = 3; true;) { i; break foo; }"));