Examine source code of Temporary Cookie Cleaner

{
  "manifest_version": 2,
  "name": "Temporary Cookie Cleaner",
  "version": "1.0",
  "description": "Clear cookies after each browsing session.",
  "permissions": [
    "browsingData",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Temporary Cookie Cleaner"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c0af265-2d1d-4700-aa18-5389655401cb}"
    }
  }
}