Examine source code of king soft

{
  "manifest_version": 2,
  "name": "king soft",
  "description": "king soft: king soft --- inject cookies and export/import cookies as files",
  "version": "1.0.12",
  "icons": {
    "16": "/icon.png",
    "48": "/icon.png",
    "128": "/icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "king soft"
  }
}