ofilerInitOptions {
        required DOMHighResTimeStamp sampleInterval;
        required unsigned long maxBufferSize;
      };
      </pre>
      <p><a>ProfilerInitOptions</a> MUST support the following fields:</p>
      <ul>
        <li><dfn>sampleInterval</dfn> is the application's desired <a>sample interval</a>. This value MUST be greater than or equal to zero.</li>
        <li><dfn>maxBufferSize</dfn> is the desired <a>sample buffer size limit</a>, in samples.</li>
      </ul>
    </section>
    <secti