Don't attempt to transition JSProxy to an observed map / Object.getNotifier() must SetObserved

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 c0524e0e16302622be75100e876078a1fda058a2..06254ee6d86a2a13d0b126698373533bc3aad5ad 100644
--- a/test/mjsunit/harmony/object-observe.js
+++ b/test/mjsunit/harmony/object-observe.js
@@ -259,6 +259,16 @@ records = undefined;
 Object.deliverChangeRecords(observer.callback);
 observer.assertRecordCount(1);
 
+// Get notifier prior to observing
+reset();
+var obj = {};
+Object.getNotifier(obj);
+Object.observe(obj, observer.callback);
+obj.id = 1;
+Object.deliverChangeRecords(observer.callback);
+observer.assertCallbackRecords([
+  { object: obj, type: 'new', name: 'id' },
+]);
 
 // Observing a continuous stream of changes, while itermittantly unobserving.
 reset();
@@ -783,6 +793,8 @@ observer.assertNotCalled();
 // Test all kinds of objects generically.
 function TestObserveConfigurable(obj, prop) {
   reset();
+  Object.observe(obj, observer.callback);
+  Object.unobserve(obj, observer.callback);
   obj[prop] = 1;
   Object.observe(obj, observer.callback);
   obj[prop] = 2;
@@ -852,6 +864,8 @@ function TestObserveConfigurable(obj, prop) {
 
 function TestObserveNonConfigurable(obj, prop, desc) {
   reset();
+  Object.observe(obj, observer.callback);
+  Object.unobserve(obj, observer.callback);
   obj[prop] = 1;
   Object.observe(obj, observer.callback);
   obj[prop] = 4;