unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, cefvcl;

type
  TForm1 = class(TForm)
    Chromium1: TChromium;
    procedure FormCreate(Sender: TObject);
  private
    FLastURL: string;
    procedure AppMinimized(Sender: TObject);
    procedure AppRestored(Sender: TObject);
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  Application.OnMinimize := AppMinimized;
  Application.OnRestore := AppRestored;
end;

procedure TForm1.AppMinimized(Sender: TObject);
begin
  FLastURL := Chromium1.Browser.MainFrame.Url;
end;

procedure TForm1.AppRestored(Sender: TObject);
begin
  Chromium1.Load(FLastURL);
end;

end.