Examine source code of Seerobots

{
  "background": {
    "scripts": [
      "background.js",
      "robots.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_popup": "popup.html",
    "default_title": "Seerobots"
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "default_locale": "en",
  "description": "__MSG_extension_description__",
  "icons": {
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "manifest_version": 2,
  "name": "Seerobots",
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "version": "1.0.0.2"
}