Examine source code of YaTab

{
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "images/icon_16.png",
      "48": "images/icon_48.png",
      "128": "images/icon_128.png"
    },
    "default_title": "Open New Tab",
    "browser_style": true
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "description": "A simple new tab page, with a personal dashboard featuring weather, to-do, notes and beautiful backgrounds.",
  "icons": {
    "16": "images/icon_16.png",
    "48": "images/icon_48.png",
    "128": "images/icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "match_about_blank": true,
      "js": [
        "js/background.js"
      ],
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "newtab.html"
  ],
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "search.yatab.net",
      "keyword": "search.yatab.net",
      "favicon_url": "https://yatab.net/img/favicon.ico",
      "suggest_url": "https://yatab.net/suggestions.php?q={searchTerms}",
      "search_url": "https://yatab.net/search.php?q={searchTerms}",
      "is_default": true
    }
  },
  "applications": {
    "gecko": {
      "id": "{708c3ac3-c8d9-486d-9d93-2ecfd512ef97}",
      "strict_min_version": "64.0"
    }
  },
  "content_security_policy": "script-src 'self';object-src 'self'",
  "manifest_version": 2,
  "name": "YaTab",
  "permissions": [
    "storage",
    "activeTab",
    "<all_urls>",
    "tabs",
    "bookmarks",
    "browsingData",
    "history"
  ],
  "version": "1.0.8"
}