Object.observe: Fixed missing case for turning off ICs.

test/mjsunit/harmony/object-observe.js

Index: test/mjsunit/harmony/object-observe.js
diff --git a/test/mjsunit/harmony/object-observe.js b/test/mjsunit/harmony/object-observe.js
index 6a0fc0dfea131f367345a1ac15ec858243377431..e90ddaf601ad9abd08ba78e316b8fe3e101ab706 100644
--- a/test/mjsunit/harmony/object-observe.js
+++ b/test/mjsunit/harmony/object-observe.js
@@ -323,3 +323,35 @@ observer.assertCallbackRecords([
   { object: obj, name: "1", type: "updated", oldValue: undefined },
   { object: obj, name: "1", type: "updated", oldValue: 9 },
 ]);
+
+
+// Assignments in loops (checking different IC states).
+reset();
+var obj = {};
+Object.observe(obj, observer.callback);
+for (var i = 0; i < 5; i++) {
+  obj["a" + i] = i;
+}
+Object.deliverChangeRecords(observer.callback);
+observer.assertCallbackRecords([
+  { object: obj, name: "a0", type: "new" },
+  { object: obj, name: "a1", type: "new" },
+  { object: obj, name: "a2", type: "new" },
+  { object: obj, name: "a3", type: "new" },
+  { object: obj, name: "a4", type: "new" },
+]);
+
+reset();
+var obj = {};
+Object.observe(obj, observer.callback);
+for (var i = 0; i < 5; i++) {
+  obj[i] = i;
+}
+Object.deliverChangeRecords(observer.callback);
+observer.assertCallbackRecords([
+  { object: obj, name: "0", type: "new" },
+  { object: obj, name: "1", type: "new" },
+  { object: obj, name: "2", type: "new" },
+  { object: obj, name: "3", type: "new" },
+  { object: obj, name: "4", type: "new" },
+]);