Examine source code of TabSync Pro

{
  "manifest_version": 2,
  "version": "3.2",
  "default_locale": "en",
  "name": "__MSG_app_name__",
  "description": "__MSG_app_desc__",
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "background": {
    "scripts": [
      "background/background_ts.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fastaddons.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content_script/content_script.js"
      ]
    }
  ],
  "browser_action": {
    "default_area": "navbar",
    "default_icon": {
      "128": "128.png"
    },
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "alarms",
    "storage",
    "tabs",
    "*://*.fastaddons.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@fastaddons.com_TabSync",
      "strict_min_version": "115.0"
    }
  }
}