Examine source code of BetterXML

{
  "name": "BetterXML",
  "version": "0.1.1",
  "description": "Powerful XML viewer for Firefox",
  "manifest_version": 2,
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "tabs",
    "clipboardWrite",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "http://*/*",
    "https://*/*"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "content_scripts": [
    {
      "js": [
        "xv.js",
        "controller.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "xv.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f7b73d4-c913-4038-b7c9-7389d5539a97}"
    }
  }
}