我成功使用了以下代码：

I have succeeded with the following code:

procedure CustomCommandLine (const processType: ustring; const commandLine: ICefCommandLine);
begin
    commandLine.AppendSwitch('--mute-audio');
end;    


begin
    CefOnBeforeCommandLineProcessing := CustomCommandLine;

    Application.Initialize;
    Application.CreateForm(TMainForm, MainForm);
    Application.Run;
end.

其他参数：
示例