Examine source code of Words Discoverer

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "2.9.0.2resigned1",
  "icons": {
    "48": "result48.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "author": "Dmitry Ignatovich",
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "common_lib.js",
      "context_menu_lib.js",
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "eng_dict.txt",
    "eng_idioms.txt"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content_script.css"
      ],
      "js": [
        "common_lib.js",
        "context_menu_lib.js",
        "content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e4591f8-253a-4d1c-b0af-8fba5578c6e5}"
    }
  }
}