Examine source code of EasyType Switcher

{
  "manifest_version": 2,
  "name": "EasyType Switcher — Автоисправление раскладки",
  "version": "1.1.7",
  "description": "Автоматическое исправление раскладки текста при наборе с большим выбором функций",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "contextMenus"
  ],
  "browser_action": {
    "default_popup": "app/popup.html",
    "default_icon": {
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "resources/background.min.js"
    ],
    "persistent": true
  },
  "icons": {
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "resources/switcher.min.js"
      ],
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fa116cd2-690e-4525-947c-47d4a56da502}"
    }
  }
}