Examine source code of Smart Tab Re(gex)namer

{
  "manifest_version": 2,
  "name": "TabRe(gex)Namer",
  "version": "0.2",
  "description": "Enables tab renaming using regex.",
  "icons": {
    "48": "icons/icon.svg"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/tabrenamer.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "src/settings/options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "Smart Tab Renamer",
    "default_popup": "src/settings/popup.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc811789-beb2-4a6b-8146-155e37b6bc7f}"
    }
  }
}