Move hash code from hidden string to a private symbol

src/object-observe.js

Index: src/object-observe.js
diff --git a/src/object-observe.js b/src/object-observe.js
index 3dfc35e8e5ec9e36ed621ca9be7d30ef3f3c091b..6ac65091591429a95d678aeac5a43fa3f6429950 100644
--- a/src/object-observe.js
+++ b/src/object-observe.js
@@ -200,28 +200,29 @@ function ObjectInfoGetOrCreate(object) {
       performingCount: 0,
     };
     %WeakCollectionSet(GetObservationStateJS().objectInfoMap,
-                       object, objectInfo);
+                       object, objectInfo, $gethash(object));
   }
   return objectInfo;
 }
 
 
 function ObjectInfoGet(object) {
-  return %WeakCollectionGet(GetObservationStateJS().objectInfoMap, object);
+  return %WeakCollectionGet(GetObservationStateJS().objectInfoMap, object, $gethash(object));

[adamk, 2015/05/21 19:11:32]

Style nit: over 80 characters here and below.

[Erik Corry, 2015/05/21 20:19:02]

I've come to rely too much on git cl format.

[Erik Corry, 2015/05/22 06:20:25]

Done.

 }
 
 
 function ObjectInfoGetFromNotifier(notifier) {
   return %WeakCollectionGet(GetObservationStateJS().notifierObjectInfoMap,
-                            notifier);
+                            notifier, $gethash(notifier));
 }
 
 
 function ObjectInfoGetNotifier(objectInfo) {
   if (IS_NULL(objectInfo.notifier)) {
-    objectInfo.notifier = { __proto__: notifierPrototype };
+    var notifier = { __proto__: notifierPrototype };
+    objectInfo.notifier = notifier;
     %WeakCollectionSet(GetObservationStateJS().notifierObjectInfoMap,
-                       objectInfo.notifier, objectInfo);
+                       notifier, objectInfo, $gethash(notifier));
   }
 
   return objectInfo.notifier;
@@ -332,13 +333,13 @@ function ConvertAcceptListToTypeMap(arg) {
 // priority. When a change record must be enqueued for the callback, it
 // normalizes. When delivery clears any pending change records, it re-optimizes.
 function CallbackInfoGet(callback) {
-  return %WeakCollectionGet(GetObservationStateJS().callbackInfoMap, callback);
+  return %WeakCollectionGet(GetObservationStateJS().callbackInfoMap, callback, $gethash(callback));
 }
 
 
 function CallbackInfoSet(callback, callbackInfo) {
   %WeakCollectionSet(GetObservationStateJS().callbackInfoMap,
-                     callback, callbackInfo);
+                     callback, callbackInfo, $gethash(callback));
 }