Google Meet virtual backgrounds

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "__MSG_name__",
  "version": "1.1",
  "description": "__MSG_description__",
  "default_locale": "en",
  "content_scripts": [
    {
      "run_at": "document_start",
      "all_frames": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/pip_content.js"
      ]
    },
    {
      "run_at": "document_start",
      "all_frames": true,
      "matches": [
        "*://meet.google.com/*"
      ],
      "css": [
        "css/meeting_content.css"
      ],
      "js": [
        "js/meeting_content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/img/icons/icon.png",
      "24": "assets/img/icons/icon.png",
      "32": "assets/img/icons/icon.png",
      "64": "assets/img/icons/icon.png",
      "128": "assets/img/icons/icon.png"
    },
    "default_title": "Title",
    "default_popup": "Popup.html"
  },
  "icons": {
    "16": "assets/img/icons/icon.png",
    "48": "assets/img/icons/icon.png",
    "128": "assets/img/icons/icon.png"
  },
  "web_accessible_resources": [
    "js/overideDefaultUserMedia.js"
  ],
  "permissions": [
    "<all_urls>",
    "storage",
    "unlimitedStorage",
    "tabs"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';"
}