Examine source code of Roblox Quick Access

{
  "manifest_version": 2,
  "name": "Roblox Quick Access",
  "version": "1.1",
  "description": "Adds a browser action icon to the toolbar. Click on the button to access to roblox website.",
  "icons": {
    "48": "icons/roblox-48.png"
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "main.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/roblox.png",
    "default_title": "Roblox Quick Access"
  }
}