Examine source code of panda AdBlock

{
  "manifest_version": 2,
  "name": "panda AdBlock",
  "description": "広告除去ソフト",
  "version": "1.0.5",
  "icons": {
    "18": "icon.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "<all_urls>",
    "webRequest",
    "tabs",
    "webRequestBlocking",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}