chromium/chrome/browser/resources/side_panel/bookmarks/power_bookmarks_labels.html

<template is="dom-repeat" items="[[labels]]">
  <cr-chip selected="[[item.active]]" disabled="[[disabled]]"
      on-click="onLabelClick">
    <iron-icon icon="[[getLabelIcon(item, item.active)]]"></iron-icon>
    [[item.label]]
  </cr-chip>
</template>