Examine source code of ManyDropship

{
  "author": "ManyDropship",
  "manifest_version": 2,
  "name": "ManyDropship",
  "description": "The ManyDropship extension is used to collect product information from any cross-border e-commerce platform website. ",
  "version": "4.1.0",
  "icons": {
    "16": "images/logo16.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "images/logo16.png",
      "48": "images/logo48.png",
      "128": "images/logo128.png"
    },
    "default_title": "ManyDropship"
  },
  "externally_connectable": {
    "matches": [
      "*://*.manydropship.com/*"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "css": [
        "css/style.css"
      ],
      "js": [
        "js/jquery.js",
        "js/util.js",
        "js/ui.js",
        "js/BrowserClient.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/jquery.js",
      "js/util.js",
      "js/client.js",
      "js/background.js",
      "js/wxwclient.js"
    ]
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "management",
    "contextMenus",
    "notifications",
    "cookies",
    "<all_urls>",
    "http://*/*",
    "https://*/*"
  ],
  "web_accessible_resources": [
    "index.html"
  ]
}