Examine source code of Weather

{
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{85909e1e-9afc-4750-9298-9e5a838957c5}"
    }
  },
  "description": "The best Weather Forecast extension!",
  "short_name": "Weather",
  "icons": {
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "manifest_version": 2,
  "version": "0.0.11",
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "content_security_policy": "script-src 'self'  'unsafe-eval'; object-src 'self';",
  "browser_action": {
    "default_icon": {
      "38": "img/icon38.png"
    },
    "default_title": "Weather",
    "default_popup": "popup.html"
  },
  "permissions": [
    "alarms",
    "storage",
    "geolocation",
    "notifications",
    "webRequest",
    "*://*/*",
    "webNavigation",
    "webRequestBlocking",
    "idle"
  ],
  "name": "Weather"
}