Examine source code of GeoLocationControl

{
  "manifest_version": 2,
  "version": "0.4",
  "name": "GeoLocationControl",
  "description": "",
  "permissions": [
    "http://*/*",
    "https://*/*",
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "homepage_url": "https://github.com/jrmgx/GeoLocationControlExtension",
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Geo Location Control"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ad6b7cbf-38b5-4399-8f16-d56855de1f68}"
    }
  }
}