Examine source code of Scroll Tracker

{
  "manifest_version": 2,
  "name": "Scroll Tracker",
  "version": "0.1",
  "description": "Browser extension to track your scrolling distance",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "dist/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_title": "Scroll Tracker",
    "default_popup": "dist/popup.html"
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "icons": {
    "96": "img/icon-96.png"
  }
}