cef开启摄像头和录音

参考资料：https://github.com/cztomczak/phpdesktop/wiki/Chrome-settings#command_line_switches

CefSharp中文帮助文档

Prefer Secure Origins For Powerful New Features

                CefSettings settings = new CefSettings();
                settings.Locale = "zh-CN";
                settings.CefCommandLineArgs.Add("enable-media-stream", "1");  //开启摄像头
                settings.CefCommandLineArgs.Add("enable-system-flash", "1");  //flash
                settings.CefCommandLineArgs.Add("enable-speech-input", "1");  //语音输入