Examine source code of Rewrite URL with Proxy

{
  "manifest_version": 2,
  "name": "rewriteurl",
  "version": "1.9.1resigned1",
  "author": "J.M.E.M. van der Werf",
  "description": "This add-on adds a proxy to the URL of a web-page",
  "icons": {
    "16": "./data/icon-16.png",
    "32": "./data/icon-32.png",
    "64": "./data/icon-64.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "rewrite.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "./data/icon-16.png",
      "32": "./data/icon-32.png",
      "64": "./data/icon-64.png"
    },
    "default_title": "Rewrite URL to proxy"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@rewriteurl"
    }
  }
}