chromium/chrome/browser/resources/chromeos/emulator/input_device_settings.html

    <style include="device-emulator-shared-styles iron-flex iron-flex-alignment
        iron-positioning">
      .content > *:not(:first-child) {
        margin-top: 10px;
      }

      cr-toggle {
        display: inline-block;
        padding-inline-end: 8px;
      }
    </style>
    <div class="layout vertical">
      <div class="element-label">
        <cr-icon-button iron-icon="device-emulator:mouse"></cr-icon-button>
        Input Devices
      </div>
      <div class="content">
        <div>
          <cr-toggle id="touchpad" on-change="onTouchpadChange"></cr-toggle>
          <span>Touchpad</span>
        </div>
        <div>
          <cr-toggle id="mouse" on-change="onMouseChange"></cr-toggle>
          <span>Mouse</span>
        </div>
        <iron-collapse id="changeDescription">
          Any existing Settings windows must be reloaded to reflect these
          changes.
        </iron-collapse>
      </div>
    </div>