Examine source code of Buoy Up

{
  "manifest_version": 2,
  "short_name": "Buoy Up",
  "name": "Buoy Up",
  "description": "Do good while you read the news.",
  "version": "1.2.7resigned1",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "login.html",
    "default_title": "BuoyUp"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "https://www.google.com/*",
        "https://mail.google.com/*",
        "https://buoyup.org/charities/*",
        "https://buoyup.org/chairity/*",
        "https://buoyup.org/account/"
      ],
      "js": [
        "jquery-3.1.1.min.js",
        "extension.js"
      ],
      "css": [
        "highlight.css"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "*.woff",
    "icon.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{90a05c59-3327-4091-b590-20fdc8793578}"
    }
  }
}