Add media size capability to PDF printer.

printing/printing_context.cc

 // 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.
 
 #include "printing/printing_context.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "printing/page_setup.h"
 #include "printing/page_size_margins.h"
@@ skipping 67 matching lines @@
                                     is_cloud_dialog || print_with_privet)) {
     settings_.set_dpi(kDefaultPdfDpi);
     gfx::Size paper_size(GetPdfPaperSizeDeviceUnits());
     const base::DictionaryValue* media_size = NULL;
     if (job_settings.GetDictionary(kSettingMediaSize, &media_size)) {
       int width_microns = 0;
       int height_microns = 0;
       if (media_size->GetInteger(kSettingMediaSizeWidthMicrons,
                                  &width_microns) &&
           media_size->GetInteger(kSettingMediaSizeHeightMicrons,
-                                 &height_microns)) {
+                                 &height_microns) &&
+          settings_.device_units_per_inch() > 0) {

[Vitaly Buka (NO REVIEWS), 2014/05/20 22:52:19]

how is this possible?

         float deviceMicronsPerDeviceUnit =
             (kHundrethsMMPerInch * 10.0f) / settings_.device_units_per_inch();
         paper_size = gfx::Size(width_microns / deviceMicronsPerDeviceUnit,
                                height_microns / deviceMicronsPerDeviceUnit);
       }
     }
     gfx::Rect paper_rect(0, 0, paper_size.width(), paper_size.height());
     if (print_to_cloud || print_with_privet) {
       paper_rect.Inset(
           kCloudPrintMarginInch * settings_.device_units_per_inch(),
           kCloudPrintMarginInch * settings_.device_units_per_inch());
     }
     settings_.SetPrinterPrintableArea(paper_size, paper_rect, true);
     return OK;
   }
 
   return UpdatePrinterSettings(open_in_external_preview);
 }
 
 }  // namespace printing