Examine source code of Aliextension Button

{
  "name": "Aliextension",
  "short_name": "Aliextension Coupons",
  "icons": {
    "48": "48.png"
  },
  "version": "1.0.17resigned1",
  "default_locale": "en",
  "externally_connectable": {
    "matches": [
      "https://aliextension.com/*"
    ]
  },
  "manifest_version": 2,
  "description": "Save Money with Auto-Apply Coupons",
  "background": {
    "persistent": true,
    "scripts": [
      "background.js",
      "backgroundone.js",
      "backgroundtwo.js",
      "injector.js",
      "ali.js",
      "else.js",
      "jquery.min.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "jquery.min.js",
        "background.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_icon": "logo.png"
  },
  "web_accessible_resources": [
    "asc.css"
  ],
  "permissions": [
    "contextMenus",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{94e5b58c-278c-4d9c-89a6-77d3add1a4ab}"
    }
  }
}