Examine source code of PhishLock

{
  "browser_specific_settings": {
    "gecko": {
      "id": "anonymous.official44@gmail.com",
      "strict_min_version": "48.0"
    }
  },
  "manifest_version": 2,
  "name": "PhishLock",
  "version": "0.1",
  "icons": {
    "128": "detective.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery-3.1.1.min.js",
        "content.js"
      ]
    }
  ]
}