[Polymer] Roll polymer to latest version

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

Index: third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html
diff --git a/third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html b/third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html
index 25fe13406b766d005ca628e0e341ee5e86cd8e48..0a08590c5c8abdf9a7790cb2183b55d3e0145dee 100644
--- a/third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html
+++ b/third_party/polymer/v1_0/components-chromium/paper-item/paper-item-shared-styles.html
@@ -8,35 +8,48 @@ Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 
+<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
+<link rel="import" href="../paper-styles/default-theme.html">
+<link rel="import" href="../paper-styles/color.html">
+
 <dom-module id="paper-item-shared-styles">
   <template>
     <style>
       :host {
         display: block;
+        position: relative;
         min-height: var(--paper-item-min-height, 48px);
         padding: 0px 16px;
       }
 
+      :host([hidden]) {
+        display: none !important;
+      }
+
       :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;
+        content: '';
         opacity: var(--dark-divider-opacity);
         pointer-events: none;