Examine source code of Online Dictionary Helper

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "0.9.5",
  "default_locale": "en",
  "description": "__MSG_appDesc__",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "img/icon19.png",
      "38": "img/icon38.png"
    },
    "default_popup": "bg/popup.html"
  },
  "author": "Zhenyu Huang",
  "background": {
    "page": "bg/background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*",
        "file://*/*"
      ],
      "js": [
        "fg/js/api.js",
        "fg/js/popup.js",
        "fg/js/range.js",
        "fg/js/text.js",
        "fg/js/frontend.js"
      ],
      "css": [
        "fg/css/client.css"
      ]
    }
  ],
  "minimum_chrome_version": "50.0.0.0",
  "options_ui": {
    "page": "bg/options.html"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "file://*/*",
    "http://*/*",
    "https://*/*",
    "storage"
  ],
  "web_accessible_resources": [
    "fg/css/frame.css",
    "fg/css/spell.css",
    "fg/js/frame.js",
    "fg/js/spell.js",
    "fg/font/spell-icons.ttf",
    "fg/font/spell-icons.woff",
    "fg/img/play.png",
    "fg/img/plus.png",
    "fg/img/cloud.png",
    "fg/img/load.gif",
    "fg/img/fail.png",
    "fg/img/good.png"
  ],
  "commands": {
    "enabled": {
      "suggested_key": {
        "default": "Alt+Q"
      },
      "description": "__MSG_lblEnabled__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{40a742a8-cc0e-4463-ae63-f2541e40d7a1}"
    }
  }
}