Update to CEF 74.1.19

- Converted almost all the demos to Lazarus thanks to avra
- Reorganized "demos" directory.

demos/Delphi_VCL/JavaScript/JSExtensionWithObjectParameter/uMyV8Handler.pas

@@ -0,0 +1,81 @@
+// ************************************************************************
+// ***************************** CEF4Delphi *******************************
+// ************************************************************************
+//
+// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
+// browser in Delphi applications.
+//
+// The original license of DCEF3 still applies to CEF4Delphi.
+//
+// For more information about CEF4Delphi visit :
+//         https://www.briskbard.com/index.php?lang=en&pageid=cef
+//
+//        Copyright � 2019 Salvador Diaz Fau. All rights reserved.
+//
+// ************************************************************************
+// ************ vvvv Original license and comments below vvvv *************
+// ************************************************************************
+(*
+ *                       Delphi Chromium Embedded 3
+ *
+ * Usage allowed under the restrictions of the Lesser GNU General Public License
+ * or alternatively the restrictions of the Mozilla Public License 1.1
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+ * the specific language governing rights and limitations under the License.
+ *
+ * Unit owner : Henri Gourvest <hgourvest@gmail.com>
+ * Web site   : http://www.progdigy.com
+ * Repository : http://code.google.com/p/delphichromiumembedded/
+ * Group      : http://groups.google.com/group/delphichromiumembedded
+ *
+ * Embarcadero Technologies, Inc is not permitted to use or redistribute
+ * this source code without explicit permission.
+ *
+ *)
+
+unit uMyV8Handler;
+
+{$I cef.inc}
+
+interface
+
+uses
+  uCEFTypes, uCEFInterfaces, uCEFv8Value, uCEFv8Handler;
+
+type
+  TMyV8Handler = class(TCefv8HandlerOwn)
+    protected
+      FMyParam : string;
+
+      function Execute(const name: ustring; const obj: ICefv8Value; const arguments: TCefv8ValueArray; var retval: ICefv8Value; var exception: ustring): Boolean; override;
+  end;
+
+implementation
+
+function TMyV8Handler.Execute(const name      : ustring;
+                              const obj       : ICefv8Value;
+                              const arguments : TCefv8ValueArray;
+                              var   retval    : ICefv8Value;
+                              var   exception : ustring): Boolean;
+begin
+  if (name = 'GetMyParam') then
+    begin
+      retval := TCefv8ValueRef.NewString(FMyParam);
+      Result := True;
+    end
+   else
+    if (name = 'SetMyParam') then
+      begin
+        if (length(arguments) > 0) and arguments[0].IsString then
+          FMyParam := arguments[0].GetStringValue;
+
+        Result := True;
+      end
+     else
+      Result := False;
+end;
+
+
+end.