Update Polymer to fix closure compile

third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html

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 <dom-module id="paper-item-shared-styles">
   <template>
     <style>
       :host {
         display: block;
         min-height: var(--paper-item-min-height, 48px);
         padding: 0px 16px;
       }
 
-      :host > ::content > *:not(:first-child):not(:last-child) {
-        margin-right: 16px;
+      :host(.iron-selected) {
+        font-weight: var(--paper-item-selected-weight, bold);
+        @apply(--paper-item-selected);
+      }
+
+      :host([disabled]) {
+        color: var(--paper-item-disabled-color, --disabled-text-color);
+        @apply(--paper-item-disabled);
+      }
+
+      :host(:focus) {
+        position: relative;
+        outline: 0;
+        @apply(--paper-item-focused);
+      }
+
+      :host(:focus):before {
+        @apply(--layout-fit);
+        content: '';
+        background: currentColor;
+        opacity: var(--dark-divider-opacity);
+
+        @apply(--paper-item-focused-before);
       }
     </style>
   </template>
 </dom-module>