Examine source code of 日本語用コンテキスト検索

{
  "manifest_version": 2,
  "name": "日本語用コンテキスト検索",
  "description": "選択したテキストをコンテキストメニューから検索します \n検索エンジンに渡す文字列のコードをUTF-8/Shift_JIS/EUC-JP/ISO-2022-JPの中から選べます",
  "author": "nepon",
  "version": "0.6.1resigned1",
  "applications": {
    "gecko": {
      "id": "context-search-ja@aime",
      "strict_min_version": "52.0"
    }
  },
  "icons": {
    "64": "search-64.svg"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "contextMenus",
    "storage"
  ],
  "background": {
    "scripts": [
      "default.js",
      "faviconLoader.js",
      "buildSubMenus.js",
      "contextsearch-bg.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true,
    "browser_style": false
  }
}