我正在开发一个Chrome扩展，它在所有场景中都工作得很好，除了在新标签中。
即，扩展仅在网站被打开用于例如stackoverflow.com.当我按ctrl+t并单击扩展图标时，它不起作用。
我做错了什么吗？还是浏览器行为？
我已经添加了我的代码供您参考。

清单

{
    "manifest_version": 2,

    "background": {
        "scripts": ["scripts/background.js"],
        "persistent": false
    },

    "content_scripts":[{
        "matches" : ["<all_urls>"],
        "js": ["scripts/jquery-2.1.0-min.js", "scripts/init.js"],
        "run_at": "document_end"
    }],

    "permissions": [
        "storage", "activeTab", "http://*/*", "https://*/*"
    ],

    "browser_action": {
        "default_icon": "images/plugin-icon-24.png"
    },

    "web_accessible_resources": [
        "*.html",
        "images/*.gif",
        "images/*.png"
    ]
}

init.js

chrome.storage.sync.get('logged_in', function(status){
    if(status.logged_in){
        chrome.runtime.sendMessage('LOGGED_IN');
    } else {
        chrome.runtime.sendMessage('NOT_LOGGED_IN');
    }
});

background.js

var add_resource = function(){
    chrome.tabs.executeScript({
        file: 'scripts/plugin.js'
    });
    chrome.tabs.insertCSS({
        file: 'styles/plugin.css'
    });
};

chrome.runtime.onMessage.addListener(function(message){ 
    alert(message);
    /*This alerts comes even in the newly opened tab. 
    But the script is not getting executed.*/

    if(message == 'LOGGED_IN'){
        add_resource();
    } else {
        chrome.browserAction.onClicked.addListener(function(tab){
            add_resource();
        });
    }
});