Examine source code of UTM Eraser

{
  "name": "UTM Eraser",
  "version": "1.3.2",
  "description": "__MSG_manifestDesc__",
  "homepage_url": "https://github.com/Psychosynthesis/Eraser",
  "icons": {
    "48": "icons/favicon.png",
    "96": "icons/faviconMiddle.png",
    "128": "icons/faviconBig.png"
  },
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/panelicon.png",
    "default_title": "Eraser",
    "default_popup": "panel/panelMenu.html"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{37d5c7e4-5054-4881-a5a7-0ce6e45efa0b}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "manifest_version": 2,
  "default_locale": "en"
}