Examine source code of Amazon linkCode Remover

{
  "manifest_version": 2,
  "name": "Amazon linkCode Remover",
  "version": "1.0",
  "description": "Removes linkCode from Amazon URLs",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6e3de14c-a239-41d5-b1f3-bf8a707186a2}"
    }
  }
}