Examine source code of Simple URL Mapping

{
  "manifest_version": 2,
  "default_locale": "zh_CN",
  "name": "Simple URL Mapping",
  "version": "1.0.1",
  "description": "__MSG_EXTENSION_DESC__",
  "icons": {
    "48": "icons/icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "options.html",
  "options_ui": {
    "page": "options.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "simple-vmap@terrywh.net"
    }
  },
  "author": "terry.wuhao@gmail.com",
  "homepage_url": "https://github.com/terrywh/CdnMirror"
}