Examine source code of QuickAnswer

{
  "manifest_version": 2,
  "name": "QuickAnswer",
  "version": "1.1.5",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "icons/scihub-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "js/injected-script.js"
  ],
  "permissions": [
    "<all_urls>",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "activeTab",
    "cookies",
    "downloads",
    "scripting",
    "notifications",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{02c000a8-1030-4885-847c-4cd68b96d671}"
    }
  }
}