Examine source code of Rotten Tomato Destroyer

{
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": "assets/icons/icon128.png",
    "default_title": "__MSG_browser_action__"
  },
  "default_locale": "en",
  "description": "__MSG_description__",
  "icons": {
    "64": "assets/icons/icon64.png",
    "128": "assets/icons/icon128.png",
    "256": "assets/icons/icon256.png"
  },
  "manifest_version": 3,
  "name": "__MSG_name__",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "declarativeNetRequest"
  ],
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "version": "1.7.0",
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "img/*.*",
        "audio/*.*",
        "assets/*.*",
        "*://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{716367d2-add8-4ab2-832c-032a1462e5c1}"
    }
  }
}