chrome/browser/resources/settings/settings_ui/breadcrumb.html

<link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">

<dom-module id="settings-breadcrumb">
  <link rel="import" type="css" href="breadcrumb.css">
  <template>
    <template is="dom-if" if="{{currentRouteTitles}}">
      <span on-tap="onTapPage_">{{currentRouteTitles.pageTitle}}</span>

      <template is="dom-repeat" items="{{currentRouteTitles.subpageTitles}}">
        &gt;
        <span on-tap="onTapSubpage_"
            data-subpage-index$="{{index}}">{{item}}</span>
      </template>
    </template>
  </template>
  <script src="breadcrumb.js"></script>
</dom-module>