Examine source code of DMCAfinder VisualReview

{
  "manifest_version": 2,
  "name": "Visual Review by DMCAfinder.com",
  "version": "3.2.2",
  "short_name": "Visual Review & Capture",
  "description": "Visual Review & Capture Tool for use with DMCAfinder.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "{54408ca0-034d-4749-84a5-500dcbacc2f9}"
    }
  },
  "icons": {
    "16": "img/icon-16.png",
    "48": "img/icon-48.png",
    "128": "img/icon-128.png"
  },
  "background": {
    "scripts": [
      "../js/background/background.js",
      "../js/contextMenu/contextMenu.js"
    ],
    "persistent": false
  },
  "browser_action": {},
  "sidebar_action": {
    "browser_style": true,
    "default_title": "Visual Review",
    "default_panel": "sidebar/default.html",
    "default_icon": "img/sidebar_icon.png",
    "open_at_install": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "../js/inj/inject.js",
        "../js/inj/scroll.js"
      ]
    }
  ],
  "incognito": "spanning",
  "permissions": [
    "notifications",
    "activeTab",
    "tabs",
    "storage",
    "contextMenus",
    "menus",
    "<all_urls>"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self' ;"
}