Use DPI from Print Preview on Windows, handle non square

printing/print_settings_conversion.cc

Index: printing/print_settings_conversion.cc
diff --git a/printing/print_settings_conversion.cc b/printing/print_settings_conversion.cc
index 19424603808e7032d4b6853e2fac44c2bb8e329d..c7b1a3dc75f30c69d4826e2b13d0dc56c8f02d87 100644
--- a/printing/print_settings_conversion.cc
+++ b/printing/print_settings_conversion.cc
@@ -178,7 +178,6 @@ bool PrintSettingsFromJobSettings(const base::DictionaryValue& job_settings,
   int copies = 1;
   int scale_factor = 100;
   bool rasterize_pdf = false;
-
   if (!job_settings.GetBoolean(kSettingCollate, &collate) ||
       !job_settings.GetInteger(kSettingCopies, &copies) ||
       !job_settings.GetInteger(kSettingColor, &color) ||
@@ -189,6 +188,14 @@ bool PrintSettingsFromJobSettings(const base::DictionaryValue& job_settings,
       !job_settings.GetBoolean(kSettingRasterizePdf, &rasterize_pdf)) {
     return false;
   }
+#if defined(OS_WIN)
+  int dpi_horizontal = 0;
+  int dpi_vertical = 0;
+  if (!job_settings.GetInteger(kSettingDpiHorizontal, &dpi_horizontal) ||
+      !job_settings.GetInteger(kSettingDpiVertical, &dpi_vertical)) {
+    return false;
+  }
+#endif
 
   settings->set_collate(collate);
   settings->set_copies(copies);
@@ -203,6 +210,7 @@ bool PrintSettingsFromJobSettings(const base::DictionaryValue& job_settings,
   bool can_modify = false;
   if (job_settings.GetBoolean(kSettingPreviewModifiable, &can_modify))
     settings->set_print_text_with_gdi(can_modify);
+  settings->set_dpi(dpi_horizontal, dpi_vertical);
 #endif
 
   return true;