Examine source code of Browser Data Cleaner

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "0.1.1",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "storage",
    "browsingData"
  ],
  "icons": {
    "128": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "browser-data-cleaner@steelkiwi.com",
      "strict_min_version": "60.0"
    }
  }
}