chrome/browser/resources/discards/graph_tab.html

<style>
  .links line {
    stroke: #999;
    stroke-opacity: 0.6;
    stroke-width: 1;
  }

  .dashed-links line {
    marker-start: url(#arrowToSource);
    stroke: #999;
    stroke-dasharray: 3;
    stroke-opacity: 0.6;
    stroke-width: 1;
  }

  #arrowToSource {
    fill: #999;
    stroke: #999;
  }

  .nodes circle {
    stroke: #000;
    stroke-width: 1.5px;
  }

  .nodes circle.pinned {
    stroke: red;
  }

  .dead image {
    display: none;
  }

  .separator {
    font: italic 13px sans-serif;
    user-select: none;
  }

  div.tooltip {
    background: lightsteelblue;
    border: 0;
    border-radius: 8px;
    padding: 2px;
    position: absolute;
    text-align: center;
  }

  @media (prefers-color-scheme: dark) {
    div.tooltip {
      background: dimgray;
    }

    .separator {
      fill: var(--cr-secondary-text-color);
    }

    .separators line {
      stroke: var(--cr-secondary-text-color);
    }
  }

  tr {
    font: 10px sans-serif;
  }

  tr.heading > td {
    font-weight: bold;
    text-align: center;
  }

  tr.value > td:nth-child(1) {
    text-align: end;
  }

  tr.value > td:nth-child(2) {
    text-align: start;
  }

  tr.value.collapsed {
    display: none;
  }

</style>
<div id="toolTips" width="100%" height="100%"
    on-request-node-descriptions="onRequestNodeDescriptions_">
</div>
<svg id="graphBody" width="100%" height="100%">
  <defs>
    <marker id="arrowToSource" viewBox="0 -5 10 10" refX="-12" refY="0"
            markerWidth="9" markerHeight="6" orient="auto">
      <path d="M15,-7 L0,0 L15,7" >
    </marker>
  </defs>
</svg>