Examine source code of Fingerprint Spoof

{
  "manifest_version": 2,
  "name": "Fingerprint Spoof",
  "version": "1.0.5",
  "description": "An extension to spoof fingerprint",
  "author": "noscripter",
  "permissions": [
    "storage",
    "<all_urls>",
    "webRequest",
    "clipboardWrite",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "match_about_blank": true,
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "fake/fakeDate.js",
    "fake/fakeNavigator.js",
    "fake/fakeScreen.js",
    "fake/fakeCookie.js",
    "fake/fakeCanPlayType.js",
    "fake/fakeCanvas.js"
  ],
  "options_ui": {
    "page": "popup.html"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "imgs/switch16.png",
      "32": "imgs/switch32.png",
      "48": "imgs/switch48.png",
      "128": "imgs/switch128.png"
    },
    "default_title": "Fingerprint Spoof"
  },
  "icons": {
    "16": "imgs/switch16.png",
    "32": "imgs/switch32.png",
    "48": "imgs/switch48.png",
    "128": "imgs/switch128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{46cc18f3-9054-4edd-9441-102a1021b5d0}"
    }
  }
}