Examine source code of JobPatrol

{
  "manifest_version": 2,
  "name": "JobPatrol",
  "description": "Keep an eye on the websites you are visiting if any are offering jobs",
  "version": "1.1resigned1",
  "icons": {
    "512": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "red.png",
    "default_title": "Open jobs page"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3e63415-81c1-4915-8928-e7d3bd4ab9be}"
    }
  }
}