阻止具有原始颜色扩展的框架访问跨原始框架

Question

// background.js
var win;

chrome.browserAction.onClicked.addListener(function (tab) {
  win = window.open('popup.html', '', 'width=1530px,height=950px');
  
  // listen to messages from inject.js
  chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
    console.log(win); // Any reference to "win" causes the error
  });
  
  chrome.tabs.executeScript(tab.id, {file: 'jquery-latest.min.js'});
  chrome.tabs.executeScript(tab.id, {file: 'inject.js'});
});