Examine source code of create a stack visualizer

{
  "manifest_version": 2,
  "name": "create a stack visualizer",
  "version": "1.0",
  "description": "Stack is a well-known linear data structure that may follow the order LIFO(Last In First Out) or FILO(First In Last Out).",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/stack-logo.png"
    }
  },
  "icons": {
    "128": "images/stack-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5a199698-c39a-46d4-8553-f2b032ae5b5b}"
    }
  }
}