Examine source code of Rustdoc Settings Sync

{
  "manifest_version": 2,
  "name": "Rustdoc Settings Sync",
  "version": "0.6.4",
  "description": "Sync settings between Rust documentation pages.",
  "icons": {
    "48": "icons/rustdocs-48.png",
    "96": "icons/rustdocs-96.png",
    "720": "icons/rustdocs.png"
  },
  "background": {
    "page": "background/background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://docs.rs/*",
        "*://doc.rust-lang.org/*",
        "*://localhost/*",
        "file:///*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "*://docs.rs/*",
    "*://doc.rust-lang.org/*",
    "*://localhost/*",
    "file:///*"
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "chrome_style": true,
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rses@notriddle.com"
    }
  }
}