Allow page range selection in system dialog called from preview

printing/printing_context.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_H_
 #define PRINTING_PRINTING_CONTEXT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 59 matching lines @@
   // Updates the context with PDF printer settings.
   Result UsePdfSettings();
 
   // Returns paper size to be used for PDF or Cloud Print in device units.
   virtual gfx::Size GetPdfPaperSizeDeviceUnits() = 0;
 
   // Updates printer settings.
   // |external_preview| is true if pdf is going to be opened in external
   // preview. Used by MacOS only now to open Preview.app.
   virtual Result UpdatePrinterSettings(bool external_preview,
-                                       bool show_system_dialog) = 0;
+                                       bool show_system_dialog,
+                                       int page_count) = 0;
 
   // Updates Print Settings. |job_settings| contains all print job
   // settings information. |ranges| has the new page range settings.
   Result UpdatePrintSettings(const base::DictionaryValue& job_settings);
 
   // Initializes with predefined settings.
   virtual Result InitWithSettings(const PrintSettings& settings) = 0;
 
   // Does platform specific setup of the printer before the printing. Signal the
   // printer that a document is about to be spooled.
@@ skipping 54 matching lines @@
   // Did the user cancel the print job.
   volatile bool abort_printing_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PrintingContext);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTING_CONTEXT_H_