De-duplicate job_settings parsing code.

printing/printing_context_no_system_dialog.h

Index: printing/printing_context_no_system_dialog.h
diff --git a/printing/printing_context_no_system_dialog.h b/printing/printing_context_no_system_dialog.h
index 505f3186fd20c38d188239980bfe9560e468f974..f45fb46f41401e497b5c5598afab3a88e5dff5d6 100644
--- a/printing/printing_context_no_system_dialog.h
+++ b/printing/printing_context_no_system_dialog.h
@@ -27,9 +27,8 @@ class PRINTING_EXPORT PrintingContextNoSystemDialog : public PrintingContext {
       bool has_selection,
       const PrintSettingsCallback& callback) OVERRIDE;
   virtual Result UseDefaultSettings() OVERRIDE;
-  virtual Result UpdatePrinterSettings(
-      const base::DictionaryValue& job_settings,
-      const PageRanges& ranges) OVERRIDE;
+  virtual Result UpdatePrinterSettings(bool target_is_pdf,
+                                       bool external_preview) OVERRIDE;
   virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE;
   virtual Result NewDocument(const base::string16& document_name) OVERRIDE;
   virtual Result NewPage() OVERRIDE;