Examine source code of Google Shopping Redirect

{
  "manifest_version": 2,
  "name": "Google Shopping Redirect",
  "version": "1.0",
  "description": "Replace the basic \"Shopping\" redirection  on the google Shopping redirection",
  "icons": {
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png",
    "512": "icons/icon.png"
  },
  "permissions": [
    "https://www.google.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/search?*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6314d618-c410-4568-aa09-cd67a718015d}"
    }
  }
}