chromium/chrome/browser/resources/data_sharing/data_sharing.html

<!doctype html>
<html dir="$i18n{textdirection}" lang="$i18n{language}">
  <head>
    <meta charset="utf-8">
    <title>Data Sharing Placeholder</title>
  </head>
  <body>
      <!--
        This UI for dev only.
        TODO(b/353703768): Remove them later in development.
      -->
    <div id="debug-container">
      <h1>Data Sharing Placeholder</h1>
      <div>
        <label for="group-id">GroupId (auto generated Id from create group):</label>
        <input id="group-id" type="text">
        <label for="token-secret">Token Secret</label>
        <input id="token-secret" type="text">
      </div>

      <div>
        <div>
          <button id="create-group-button">Create Group</button>
        </div>
        <div>
          <button id="read-group-button">Read Group</button>
        </div>
        <div>
          <button id="create-join-flow-button">Create Join Flow</button>
        </div>
        <div>
          <button id="create-invite-flow-button">Create Invite Flow</button>
        </div>
        <div>
          <button id="create-manage-flow-button">Create Manage Flow</button>
        </div>
      </div>
    </div>
    <script type="module" src="data_sharing.js"></script>
    <link rel="stylesheet" href="data_sharing_sdk.css">
    <!-- TODO(pengchaocai): This css only applies to dev ui. Remove once the dev ui is removed. -->
    <link rel="stylesheet" href="data_sharing_dev.css">
  </body>
</html>