Examine source code of Favorite Tabs

{
  "manifest_version": 2,
  "name": "Favorite Tabs",
  "version": "2.0",
  "description": "Manage and switch to your favorite tabs easily.",
  "permissions": [
    "tabs",
    "sessions",
    "storage"
  ],
  "background": {
    "scripts": [
      "functions.js",
      "actions-functions.js",
      "actions.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Shift+Alt+1"
      }
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{162c2387-346e-4e93-a981-8ab83617fc92}"
    }
  }
}