Examine source code of Access URL

{
  "version": "0.1.1",
  "name": "Access URL",
  "manifest_version": 2,
  "description": "Share access to websites without giving away your username and password. Share access with an Access URL instead.",
  "browser_action": {
    "default_title": "AccessURL",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "img/icon-16.png",
    "48": "img/icon-48.png",
    "128": "img/icon-128.png"
  },
  "web_accessible_resources": [
    "inject.html"
  ],
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "contextMenus",
    "tabs",
    "storage",
    "<all_urls>",
    "cookies",
    "clipboardWrite"
  ],
  "content_security_policy": "default-src 'self'; script-src 'self' 'unsafe-eval'; style-src * 'unsafe-inline'; img-src 'self' data:; connect-src *;"
}