Deleting SWebBrowser widget after use

Hi,

I have managed to create a SWebBrowser widget on scene like this

	mSlateBrowserWidget = SNew(SWebBrowser)
		.InitialURL(TEXT("https://www.google.com"));

And then add it to viewport

	GEngine->GameViewport->AddViewportWidgetContent(mSlateBrowserWidget.ToSharedRef());

And to remove it

GEngine->GameViewport->RemoveViewportWidgetContent(mSlateBrowserWidget.ToSharedRef());

But how to destroy the mSlateBrowserWidget after it is removed from viewport? I really would not want to left hanging in the memory.