Examine source code of MY AD FINDER

{
  "manifest_version": 2,
  "name": "MY AD FINDER",
  "description": "MY AD FINDER allows you to collect, save & hunt trending ads automatically from your facebook news feed.",
  "version": "2.42.1",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "*://*.facebook.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "MY AD FINDER",
    "default_icon": "assets/icon-48.png",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "*://*.facebook.com/*"
      ]
    },
    {
      "js": [
        "interceptor.js"
      ],
      "matches": [
        "*://*.facebook.com/*"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "js": [
        "maf-content.js"
      ],
      "matches": [
        "*://*.myadfinder.com/*"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{77b9931a-7b7b-4d04-a948-8cd9d9727f19}"
    }
  },
  "web_accessible_resources": [
    "/assets/happy.png",
    "/assets/bleulogo.png",
    "/assets/sad.png",
    "/assets/freshchat.png",
    "scripti.js"
  ]
}