Well, people. I already solved my problem. Actually it was so simple. To use the generated .PAS, just include it in the project and assign in the USES statemments. After that, you need to assign the custom highlighter to a SynComponent in RunTime. Like this:
var
HL : TSynSampleSyn;
begin
HL := TSynSampleSyn.Create(Self);
SynEdit1.Highlighter := HL;
end;
After execute this block, the SynEdit will be ready for use.