Run bower update

third_party/polymer/components/paper-input/paper-input.html

Index: third_party/polymer/components/paper-input/paper-input.html
diff --git a/third_party/polymer/components/paper-input/paper-input.html b/third_party/polymer/components/paper-input/paper-input.html
index 13cdf97e8a6fe6fad3410cc1211ae533c465d762..075cfa68b45c096f5760fa98ff5170f7a02a066c 100644
--- a/third_party/polymer/components/paper-input/paper-input.html
+++ b/third_party/polymer/components/paper-input/paper-input.html
@@ -74,6 +74,10 @@ style this element.
         display: block;
       }
 
+      :host([hidden]) {
+        display: none !important;
+      }
+
       input::-webkit-input-placeholder {
         color: var(--paper-input-container-color, --secondary-text-color);
       }
@@ -95,7 +99,7 @@ style this element.
 
       <content select="[prefix]"></content>
 
-      <label hidden$="[[!label]]">[[label]]</label>
+      <label hidden$="[[!label]]" aria-hidden="true">[[label]]</label>
 
       <input is="iron-input" id="input"
         aria-labelledby$="[[_ariaLabelledBy]]"