Examine source code of Zoom Lock

{
  "manifest_version": 2,
  "name": "Zoom Lock",
  "version": "1.1resigned1",
  "author": "Rob Hoelz",
  "description": "Prevents zooming on webpages",
  "page_action": {
    "browser_style": true,
    "default_icon": "icons/locked.svg",
    "default_title": "Zoom locked",
    "show_matches": [
      "<all_urls>"
    ]
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{05af7781-9309-46db-83ac-2aad620cff45}"
    }
  }
}