Examine source code of ConditionalRun

{
  "name": "ConditionalRun",
  "version": "0.0.4resigned1",
  "manifest_version": 2,
  "description": "Run custom scripts on different cases",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "inject.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "storage",
    "https://*/*",
    "http://*/*",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{aa0622d0-cac7-476d-9b3d-48ff394bcf21}"
    }
  }
}