This JS code snippet helps to extract passwords from Chrome. It's based on http://superuser.com/questions/655294/how-can-i-export-chrome-passwords/675167#675167 answer.

chrome-password-export

var out = [];
var pm = PasswordManager.getInstance();
var model = pm.savedPasswordsList_.dataModel;
console.log(model);
var pl = pm.savedPasswordsList_;
for (var i = 0; i < model.length; i++) {
  PasswordManager.requestShowPassword(i);
}
alert('After you press Ok results should appear in ~5 seconds.\n' +
  "If password fields are empty, try increasing the timeout in the last line," +
  " i.e. set to 10000 for 10 seconds");
setTimeout(
  function () {
    out.push('domain,url,username,password');
    for (var i = 0; i < model.length; i++) {
      var record = model.array_[i];
      var user = record.username;
      var item = pl.getListItemByIndex(i);
      var proto = record.url.split('://')[0];

      /* handle exception while referencing a member called "value" for each password entry */
      if (item.querySelector('div.password input') != null) {
        pass = item.querySelector('div.password input').value;
      } else {
        pass = null;
      }

      var proto = record.url.split('://')[0];
      var line = `${record.shownOrigin},${record.url},${user},${pass}`;
      out.push(line);
      console.log(line);
    }
    document.body.innerText = out.join('\n');
  }, 5000);

[+] Included an if-else for exception handling of password entries
[+] Exported minimal fields: domain, url, username and password

The output can be saved to a csv and imported into KeepassX.