Examine source code of Instant Prime Search

{
  "manifest_version": 2,
  "name": "Instant Prime Search",
  "description": "Search Amazon Prime instantly from your browser and save on shipping",
  "version": "1.14resigned1",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon.png"
  },
  "permissions": [
    "tabs",
    "contextMenus",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd33c01b-ea62-4a96-9cb5-d6a53daf0391}"
    }
  }
}