Examine source code of Trust Extension

{
  "manifest_version": 2,
  "name": "Trust Extension",
  "version": "19.1",
  "description": "Trust : everything on plateformes, apps, web, via extension.",
  "browser_action": {
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec4d65b7-518d-47b9-993e-3b9e2b782c8f}"
    }
  }
}