Examine source code of Yandex.Bar

{
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "manifest_version": 2,
  "permissions": [
    "contextMenus",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "cookies",
    "bookmarks",
    "history",
    "unlimitedStorage",
    "management",
    "tabs",
    "notifications",
    "idle",
    "http://*/*",
    "https://*/*"
  ],
  "default_locale": "ru",
  "background": {
    "scripts": [
      "background/backend.js",
      "slice/slice-backend.min.js"
    ]
  },
  "browser_action": {
    "default_icon": "button/img/mail_no_connect.png",
    "browser_style": true
  },
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "includes/nano-includes.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    },
    {
      "all_frames": true,
      "js": [
        "includes/nano-includes-frames.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    },
    {
      "all_frames": false,
      "js": [
        "includes/mail-includes.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "balloon/mail/img/icon.png",
    "logo/*",
    "includes/*",
    "common/*"
  ],
  "icons": {
    "16": "logo/chrome/ya_16_ru.png",
    "48": "logo/chrome/mail_48.png",
    "128": "logo/chrome/mail_128.png"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "applications": {
    "gecko": {
      "strict_min_version": "56.0a1",
      "id": "yasearch@yandex.ru"
    }
  },
  "version": "8.23.3resigned1"
}