Remove unused parameters from the onOpenWithTransport method in PDFViewerApplication.initPassiveLoading

The only parameter that we actually need here is the `PDFDataRangeTransport`-instance, since the others are not necessary.
 - The `url` parameter, as passed to the `getDocument` function in the API, is simply being ignored; see 2d87a2eb1c/src/display/api.js (L447-L458)
 - The `length` parameter, as passed to the `getDocument` function in the API, is always being overwritten; see 2d87a2eb1c/src/display/api.js (L519-L525)

web/firefoxcom.js

@@ -347,11 +347,7 @@ class FirefoxExternalServices extends DefaultExternalServices {
             args.filename
           );
 
-          callbacks.onOpenWithTransport(
-            args.pdfUrl,
-            args.length,
-            pdfDataRangeTransport
-          );
+          callbacks.onOpenWithTransport(pdfDataRangeTransport);
           break;
         case "range":
           pdfDataRangeTransport.onDataRange(args.begin, args.chunk);