>>904
色々試して見つけたよ

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Chromium]

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Chromium\PluginsAllowedForUrls]
"1"="https://*";
"2"="http://*";

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Chromium\PluginsBlockedForUrls]