Examine source code of Dota Tooltips

{
  "manifest_version": 2,
  "name": "Dota Tooltips",
  "version": "0.0.1.5resigned1",
  "description": "Popup text for Dota 2 related keywords.",
  "author": "github.com/dgkf",
  "icons": {
    "128": "icons/dotatooltips_icon_128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "http://cdn.dota2.com/",
    "https://www.dota2.com/*"
  ],
  "background": {
    "scripts": [
      "third_party_resources/js/jquery-3.1.0.min.js",
      "js/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icons/dotatooltips_icon_128.png",
    "default_title": "Dota Tooltips",
    "default_popup": "html/options.html"
  },
  "options_ui": {
    "chrome_style": true,
    "page": "html/options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "third_party_resources/js/jquery-3.1.0.min.js",
        "js/add_tooltips.js"
      ],
      "css": [
        "css/style_custom.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "html/*.html",
    "json/*.json"
  ],
  "applications": {
    "gecko": {
      "id": "dotatooltips@gmail.com"
    }
  }
}