Examine source code of Linkflot

{
  "manifest_version": 2,
  "name": "Linkflot",
  "short_name": "Linkflot",
  "description": "Organize all your resources",
  "icons": {
    "16": "assets/images/start-16x16.png",
    "32": "assets/images/start-32x32.png",
    "128": "assets/images/start-128x128.png"
  },
  "version": "7.0.0",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://*.linkedin.com/*",
    "https://*.facebook.com/*",
    "https://*.google.com/*",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "chrome_settings_overrides": {
    "homepage": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1ef78ba7-8663-4868-b2f9-45a9f46b4742}"
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "match_about_blank": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    },
    {
      "all_frames": true,
      "match_about_blank": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "inject-same-site-none-cookies.js"
      ],
      "run_at": "document_start"
    }
  ]
}