Roll Polymer to 1.3.1

third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json

Index: third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json
diff --git a/third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json b/third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json
index db08f2170ce1fbdd7e6da77ec75765b3511c7be2..85e8252b32098564dd6e86bbd27e0ae01c5dea40 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json
+++ b/third_party/polymer/v1_0/components-chromium/iron-behaviors/.bower.json
@@ -1,6 +1,6 @@
 {
   "name": "iron-behaviors",
-  "version": "1.0.12",
+  "version": "1.0.13",
   "description": "Provides a set of behaviors for the iron elements",
   "private": true,
   "authors": [
@@ -25,16 +25,16 @@
     "iron-test-helpers": "polymerelements/iron-test-helpers#^1.0.0",
     "iron-component-page": "polymerelements/iron-component-page#^1.0.0",
     "test-fixture": "polymerelements/test-fixture#^1.0.0",
-    "web-component-tester": "polymer/web-component-tester#^3.4.0",
+    "web-component-tester": "^4.0.0",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
   },
   "ignore": [],
   "homepage": "https://github.com/PolymerElements/iron-behaviors",
-  "_release": "1.0.12",
+  "_release": "1.0.13",
   "_resolution": {
     "type": "version",
-    "tag": "v1.0.12",
-    "commit": "657f526a2382a659cdf4e13be87ecc89261588a3"
+    "tag": "v1.0.13",
+    "commit": "a7bc3428a6da2beed21987b3a8028206826a12bc"
   },
   "_source": "git://github.com/PolymerElements/iron-behaviors.git",
   "_target": "^1.0.0",