Examine source code of Search Ebay Sold

{
  "name": "Search Ebay Sold",
  "description": "Searches Ebay for sold items based on highlighted text with context menu.",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "icons/icon16.png",
    "icons/icon48.png",
    "icons/icon128.png",
    "background.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e169da7-f976-42cc-ad16-3091b722c61a}"
    }
  }
}