Examine source code of Copy Frame

{
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "default_locale": "en",
  "version": "0.2",
  "manifest_version": 2,
  "icons": {
    "16": "icons/icon16.png",
    "24": "icons/icon24.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png",
    "192": "icons/icon192.png",
    "256": "icons/icon256.png"
  },
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "context.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ]
}