Examine source code of Blogger Report

{
  "manifest_version": 2,
  "name": "Blogger Report",
  "version": "1.7.1",
  "description": "Extension pour les rapports Blogger",
  "author": "Gilles Grandou",
  "permissions": [
    "<all_urls>",
    "contextMenus",
    "notifications",
    "storage",
    "downloads",
    "clipboardWrite",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.blogger.com/report*"
      ],
      "js": [
        "content.js"
      ]
    },
    {
      "matches": [
        "https://reportingwidget.google.com/widget/*"
      ],
      "js": [
        "widget-content.js"
      ],
      "all_frames": true
    },
    {
      "matches": [
        "https://support.google.com/blogger/answer/7540088*"
      ],
      "js": [
        "old-content.js"
      ]
    },
    {
      "matches": [
        "https://reportcontent.google.com/forms/ncii*"
      ],
      "js": [
        "ncii-fill.js",
        "ncii-content.js"
      ]
    },
    {
      "matches": [
        "*://*.blogspot.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "popup-content.js",
        "capture-helper.js"
      ],
      "all_frames": false,
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://e-enfance.org/formulaire-de-signalement/*"
      ],
      "js": [
        "browser-polyfill.js",
        "3018-content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "popup.html",
    "popup.js",
    "name-prompt.html",
    "name-prompt.js",
    "style.css"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "blogger-report@grandou.net",
      "strict_min_version": "102.0"
    }
  }
}