Fix _isChromeExtension to test for testing 'undefined'.

diff --git a/core.js b/core.js
index b63c5decf25db26793b0925d7c476a7df3c4ff8f..189b08277d92b7b30042eebc0a1f11798b5da03b 100644 (file)
--- a/core.js
+++ b/core.js
@@ -227,5 +227,5 @@ SkeletonKey.prototype._initChromeExtension = function() {
  * @private
  */
 SkeletonKey.prototype._isChromeExtension = function() {
-  return typeof chrome !== undefined && typeof chrome.extension !== undefined;
+  return typeof chrome !== 'undefined' && typeof chrome.tabs !== 'undefined';
 };