Examine source code of Warn Insecure Redirection

{
  "name": "__MSG_extensionName__",
  "author": "Terry",
  "version": "0.1.6",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "38": "icon_38.png",
    "48": "icon_48.png",
    "96": "icon_96.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.htm"
  },
  "web_accessible_resources": [
    "redir.htm"
  ]
}