Merge pull request #2553 from Polymer/ebidel-patch-1

Fix missing var

Author: kevinpschaaf

src/lib/experimental/observe-js-behavior.html

@@ -107,6 +107,7 @@
   },
 
   _removeObserveJsObserver: function(object, path) {
+    var obs = this._observeJsStatic.observerMap.get(object);
     var el = obs.elements[this._observeJsId];
     if (--el.paths[path] === 0) {
       delete el.paths[path];
@@ -171,4 +172,4 @@
 // Poll observe-js all the time
 setInterval(Platform.performMicrotaskCheckpoint, 125);
 
-</script>
+</script>