Port #3844 to 2.x

Author: dfreedm

bower.json

@@ -21,7 +21,7 @@
   },
   "dependencies": {
     "shadycss": "webcomponents/shadycss#^v1.0.0",
-    "webcomponentsjs": "^v1.0.2"
+    "webcomponentsjs": "webcomponents/webcomponentsjs#^v1.0.2"
   },
   "devDependencies": {
     "web-component-tester": "^v6.0.0",