Examine source code of Branch Name Generator

{
  "manifest_version": 2,
  "name": "Branch Name Generator By Jira Issue",
  "description": "Ajuda para criar o nome da sua branch para o git de forma automatizada",
  "version": "1.4",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_action": {
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "action.css"
      ],
      "js": [
        "action.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7ea8bdff-ed91-4eca-8f6c-d56b41c0ac86}"
    }
  }
}