Roll Polymer to 1.3.1

third_party/polymer/v1_0/components-chromium/paper-item/bower.json

Index: third_party/polymer/v1_0/components-chromium/paper-item/bower.json
diff --git a/third_party/polymer/v1_0/components-chromium/paper-item/bower.json b/third_party/polymer/v1_0/components-chromium/paper-item/bower.json
index 6b1c37a2ac6070520e83ec0eb7944128735cca94..dd9b139377977bdce173504d0ec6fa767a624100 100644
--- a/third_party/polymer/v1_0/components-chromium/paper-item/bower.json
+++ b/third_party/polymer/v1_0/components-chromium/paper-item/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "paper-item",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "description": "A material-design styled list item",
   "authors": [
     "The Polymer Authors"
@@ -31,14 +31,12 @@
   },
   "devDependencies": {
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
+    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#^1.0.0",
     "iron-icon": "PolymerElements/iron-icon#^1.0.0",
     "iron-icons": "PolymerElements/iron-icons#^1.0.0",
-    "paper-checkbox": "PolymerElements/paper-checkbox#^1.0.0",
     "paper-icon-button": "PolymerElements/paper-icon-button#^1.0.0",
-    "paper-input": "PolymerElements/paper-input#^1.0.0",
-    "paper-toggle-button": "PolymerElements/paper-toggle-button#^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",
     "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0"
   }