title: Get Selection DOM in chrome extension contextmenu
body: <p>I try to get the DOM I select by <code>ContextMenu</code> in Chrome Extension.</p>
  
  <p>Code: </p>
  
  <pre><code>chrome.contextMenus.onClicked.addListener(function(info, tab){
    // the info.selectionText just the text, don not contains html.
  });
  
  chrome.contextMenus.create({
    title: "Demo",
    contexts: ["selection"],
    id: "demo"
  });
  </code></pre>
  
  <p>but the info.selectionText don't contains the HTML DOM. Is there any way to get the selection dom in Chrome extension contextMenu?. Please suggest. thanks.</p>