Examine source code of Snapchat web

{
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.0.7",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "*://*.snapchat.com/*",
    "*://*.sc-corp.net/*"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.snapchat.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "scripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "scripts/inject.js",
    "scripts/service-worker.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4cdc299c-0eb3-450b-afc6-b2159744fdf7}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}