Cefsharp: Allow flash plugin

[SimonTheCat]

Allow plugin policy not work for flash
CefSettings.CefCommandLineArgs.Add("plugin-policy", "allow");
or

        public bool OnBeforePluginLoad(string mimeType, string url, bool isMainFrame, string topOriginUrl, WebPluginInfo pluginInfo, ref PluginPolicy pluginPolicy)
        {
            pluginPolicy = PluginPolicy.Allow;
            return true;
        }

CEF 79 dev WindowForm Win10

[amaitland]

It's important to note that CefSharp is just a wrapper around the Chromium Embedded Framework (CEF). Closing this as upstream and as changes need to be made in CEF.

The CEF project has it's own issue tracker located at https://bitbucket.org/chromiumembedded/cef it is recommended you ask on https://magpcss.org/ceforum/index.php before opening an issue on the CEF issue tracker.

[amaitland]

Looks like there's already https://bitbucket.org/chromiumembedded/cef/issues/2768/allow-flash-to-play-without-user and https://magpcss.org/ceforum/viewtopic.php?f=7&t=17068

Please search the CEF issue tracker and forum before opening any further issues.

[SimonTheCat]

Thank you!
solution for issue

CefSettings.CefCommandLineArgs.Add("plugin-policy", "allow");
...
var contx = Cef.GetGlobalRequestContext();
Cef.UIThreadTaskFactory.StartNew(delegate
{
  contx.SetPreference("profile.default_content_setting_values.plugins", 1, out string err);
});