Examine source code of X-Switch

{
  "manifest_version": 2,
  "name": "X-Switch",
  "version": "1.6",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "incognito": "spanning",
  "icons": {
    "48": "icons/logo.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "scripting",
    "cookies",
    "tabs",
    "activeTab",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "scripts/shared.js",
      "scripts/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "x-switch_ff_addon@vinzz.be"
    }
  },
  "page_action": {
    "show_matches": [
      "<all_urls>"
    ],
    "default_icon": "icons/logo.png",
    "browser_style": true,
    "default_title": "X-Switch",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "chrome_style": true
  }
}