Examine source code of Turbo Scroll

{
  "manifest_version": 2,
  "name": "Turbo Scroll",
  "default_locale": "en",
  "version": "1.0.1",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "turbo-scroll@mercan.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png"
    },
    "default_title": "Turbo Scroll",
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "toggle-scroll": {
      "suggested_key": {
        "default": "Alt+S"
      },
      "description": "Start/Stop auto-scroll"
    },
    "speed-up": {
      "suggested_key": {
        "default": "Alt+Up"
      },
      "description": "Increase scroll speed"
    },
    "speed-down": {
      "suggested_key": {
        "default": "Alt+Down"
      },
      "description": "Decrease scroll speed"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_idle"
    }
  ]
}