Examine source code of PlayBridge Video Detector

{
  "manifest_version": 2,
  "name": "PlayBridge Video Detector",
  "version": "0.6.3",
  "description": "Detect and cast browser videos through the PlayBridge desktop app.",
  "icons": {
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "ui/popup.html",
    "default_icon": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "storage",
    "tabs",
    "menus",
    "notifications",
    "nativeMessaging",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "video-detector@playbridge",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}