Examine source code of JSD Error Notifier

{
  "name": "JSD Error Notifier",
  "short_name": "jsd_error_notifier",
  "description": "TWEAKED_Notifies JavaScript errors by icon in toolbar bar or notification popup",
  "version": "1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    }
  ],
  "options_page": "options.html",
  "icons": {
    "16": "img/error_16.png",
    "48": "img/error_48.png",
    "128": "img/error_128.png"
  },
  "incognito": "spanning",
  "page_action": {
    "default_icon": {
      "19": "img/error_19_disabled.png",
      "38": "img/error_38_disabled.png"
    },
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "img/error_64.png",
    "img/error_38.png",
    "img/error_19.png",
    "popup.html",
    "options.html"
  ],
  "permissions": [
    "<all_urls>",
    "tabs",
    "storage",
    "webRequest"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc7d2719-4a32-4a47-be89-68e51485d5ed}"
    }
  }
}