Move settings setup for PDF and cloud print into single location in PrintingContext

printing/print_dialog_gtk_interface.h

Index: printing/print_dialog_gtk_interface.h
diff --git a/printing/print_dialog_gtk_interface.h b/printing/print_dialog_gtk_interface.h
index 3b3fcddb9b6bb34b9b507689635bcb980e74f35d..e3506dd93590ea874bb5161bb421bc4d827093d1 100644
--- a/printing/print_dialog_gtk_interface.h
+++ b/printing/print_dialog_gtk_interface.h
@@ -24,11 +24,7 @@ class PrintDialogGtkInterface {
 
   // Updates the dialog to use |settings|. Only used when printing without the
   // system print dialog. E.g. for Print Preview. Returns false on error.
-  // |target_is_pdf| is true if implementation needs to generate PDF without
-  // actual printing. In this case implementation may avoid setup of native
-  // print system. Ex. "save to pdf" or Cloud Print.
-  virtual bool UpdateSettings(bool target_is_pdf,
-                              PrintSettings* settings) = 0;
+  virtual bool UpdateSettings(PrintSettings* settings) = 0;
 
   // Shows the dialog and handles the response with |callback|. Only used when
   // printing with the native print dialog.