De-duplicate job_settings parsing code.

printing/printing_context_gtk.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PRINTING_PRINTING_CONTEXT_GTK_H_
 #define PRINTING_PRINTING_CONTEXT_GTK_H_
 
 #include <string>
 
 #include "printing/printing_context.h"
@@ skipping 20 matching lines @@
   // Prints the document contained in |metafile|.
   void PrintDocument(const Metafile* metafile);
 
   // PrintingContext implementation.
   virtual void AskUserForSettings(
       gfx::NativeView parent_view,
       int max_pages,
       bool has_selection,
       const PrintSettingsCallback& callback) OVERRIDE;
   virtual Result UseDefaultSettings() OVERRIDE;
-  virtual Result UpdatePrinterSettings(
-      const base::DictionaryValue& job_settings,
-      const PageRanges& ranges) OVERRIDE;
+  virtual Result UpdatePrinterSettings(bool target_is_pdf,
+                                       bool external_preview) OVERRIDE;
   virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE;
   virtual Result NewDocument(const base::string16& document_name) OVERRIDE;
   virtual Result NewPage() OVERRIDE;
   virtual Result PageDone() OVERRIDE;
   virtual Result DocumentDone() OVERRIDE;
   virtual void Cancel() OVERRIDE;
   virtual void ReleaseContext() OVERRIDE;
   virtual gfx::NativeDrawingContext context() const OVERRIDE;
 
  private:
   base::string16 document_name_;
   PrintDialogGtkInterface* print_dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintingContextGtk);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTING_CONTEXT_GTK_H_