Improved demos

- Bug fix #33 : Drag and drop is now supported in OSR mode.
- Improved keyboard handling in OSR mode.
- MiniBrowser demo : The DOM visitor and the Javascript extensions now
send customized results to the main form
- Fixed some CEF3 variable definitions.

demos/MiniBrowser/uSimpleTextViewer.pas

@@ -0,0 +1,25 @@
+unit uSimpleTextViewer;
+
+interface
+
+uses
+  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
+  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;
+
+type
+  TSimpleTextViewerFrm = class(TForm)
+    Memo1: TMemo;
+  private
+    { Private declarations }
+  public
+    { Public declarations }
+  end;
+
+var
+  SimpleTextViewerFrm: TSimpleTextViewerFrm;
+
+implementation
+
+{$R *.dfm}
+
+end.