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

printing/print_settings.h

Index: printing/print_settings.h
diff --git a/printing/print_settings.h b/printing/print_settings.h
index b80d3545778432e96779db8737f6121acb8b2984..b18d86022a5e669a93cf63c76ca7b5366198ce11 100644
--- a/printing/print_settings.h
+++ b/printing/print_settings.h
@@ -48,7 +48,6 @@ class PRINTING_EXPORT PrintSettings {
   // to false on those platforms to avoid double flipping.
   void SetPrinterPrintableArea(const gfx::Size& physical_size_device_units,
                                const gfx::Rect& printable_area_device_units,
-                               int units_per_inch,
                                bool landscape_needs_flip);
   const PageSetup& page_setup_device_units() const {
     return page_setup_device_units_;