Examine source code of DCookie

{
  "name": "DCookie",
  "description": "An efficient cookie manager. View, edit, delete and search for cookies. Designed for privacy aware users. Automatically opens the DCookie Manager upon extension startup (this can be configured via the UI).",
  "version": "1.3",
  "manifest_version": 2,
  "permissions": [
    "activeTab",
    "cookies",
    "storage",
    "*://*/*"
  ],
  "options_ui": {
    "page": "cookie-manager.html",
    "open_in_tab": true
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/48.png",
      "96": "icons/96.png"
    },
    "default_title": "Open DCookie Manager"
  }
}