Examine source code of Nightly Tester Tools

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "{8620c15f-30dc-4dba-a131-7c5d20cf4a29}",
      "strict_min_version": "56.0"
    }
  },
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "4.1resigned1",
  "author": "Automation Development, Kohei Yoshino",
  "homepage_url": "https://wiki.mozilla.org/QA/Automation/Projects/Addons/NightlyTesterTools",
  "default_locale": "en_US",
  "permissions": [
    "clipboardWrite",
    "management",
    "menus",
    "storage",
    "tabs"
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_title": "__MSG_extension_name__",
    "default_popup": "menu.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "shared.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}