chromium/ui/webui/resources/cr_components/searchbox/searchbox_action.html

<style import="cr-shared-style">
  :host {
    --action-height: 28px;
    border: solid 1px var(--color-searchbox-results-action-chip);
    border-radius: 8px;
    display: flex;
    height: var(--action-height);
    min-width: 0;
    outline: none;
    padding-inline-end: 8px;
    padding-inline-start: 8px;
  }

  :host(:hover) {
    background-color: var(--color-searchbox-results-button-hover);
  }

  :host(:focus) {
    margin: 2px;
    border: solid 1px var(--color-searchbox-results-action-chip);
    box-shadow: none;
  }

  .contents {
    align-items: center;
    display: flex;
    min-width: 0;
  }

  #action-icon {
    flex-shrink: 0;
    -webkit-mask-position: center;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-size: 15px;
    background-color: var(--color-searchbox-results-action-chip-icon);
    background-position: center center;
    background-repeat: no-repeat;
    height: 16px;
    width: 16px;
  }

  #text {
    overflow: hidden;
    padding-inline-start: 8px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

</style>
<div class="contents" title="[[tooltip_]]">
  <div id="action-icon" style$="-webkit-mask-image: url([[action.iconUrl]])"></div>
  <div id="text" inner-h-t-m-l="[[hintHtml_]]"></div>
</div>