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

printing/printing_context.h

Index: printing/printing_context.h
diff --git a/printing/printing_context.h b/printing/printing_context.h
index 7fa90d261a6dae8e00b9161504feebd264e81fdc..7a0a8c8b99ad9d1839ca5322ac15b4ded9be9cc8 100644
--- a/printing/printing_context.h
+++ b/printing/printing_context.h
@@ -51,14 +51,13 @@ class PRINTING_EXPORT PrintingContext {
   // default device settings.
   virtual Result UseDefaultSettings() = 0;
 
+  // Returns paper size to be used for PDF or Cloud Print in device units.
+  virtual gfx::Size GetPdfPaperSizeDeviceUnits() = 0;
+
   // Updates printer settings.
-  // |target_is_pdf| is true if implementation needs to generate PDF without
-  // actual printing. In this case implementation may avoid setup of native
-  // print system. Ex. "save to pdf" or Cloud Print.
   // |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 target_is_pdf,
-                                       bool external_preview) = 0;
+  virtual Result UpdatePrinterSettings(bool external_preview) = 0;
 
   // Updates Print Settings. |job_settings| contains all print job
   // settings information. |ranges| has the new page range settings.