chrome/browser/resources/md_extensions/item_list.html

<link rel="import" href="chrome://resources/html/cr.html">
<link rel="import" href="chrome://resources/html/polymer.html">
<link rel="import" href="chrome://resources/polymer/v1_0/iron-list/iron-list.html">
<link rel="import" href="chrome://resources/polymer/v1_0/iron-resizable-behavior/iron-resizable-behavior.html">
<link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable-behavior.html">
<link rel="import" href="chrome://extensions/animation_helper.html">
<link rel="import" href="chrome://extensions/item.html">

<dom-module id="extensions-item-list">
  <template>
    <style>
      :host {
        @apply(--layout-vertical);
      }

      iron-list {
        @apply(--layout-flex);
        margin-top: 18px;
      }

      .wrapper {
        padding: 6px;
      }
    </style>
    <iron-list id="list" items="[[computeShownItems_(items.*, filter)]]"
        as="item" grid>
      <template>
        <div class="wrapper">
          <extensions-item data="[[item]]" delegate="[[delegate]]"
              id="[[item.id]]" in-dev-mode="[[inDevMode]]">
          </extensions-item>
        </div>
      </template>
    </iron-list>
  </template>
  <script src="chrome://extensions/item_list.js"></script>
</dom-module>