Examine source code of FormAutoFill

{
  "manifest_version": 2,
  "name": "フォーム自動入力ツール",
  "version": "1.1.0",
  "description": "フォーム営業時に、登録した情報を自動でフォームに入力します",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "contextMenus",
    "https://extensionpay.com/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src https://extensionpay.com",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "ExtPay.js",
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://extensionpay.com/*"
      ],
      "js": [
        "ExtPay.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "ExtPay.js",
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/icon48.png"
  },
  "web_accessible_resources": [
    "popup.html",
    "popup.css",
    "popup.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "form-autofill@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}