Clean up printer preference handling.

chromeos/printing/printer_translator.h

Index: chromeos/printing/printer_translator.h
diff --git a/chromeos/printing/printer_translator.h b/chromeos/printing/printer_translator.h
index 1efa84e223ebc35119def9bd6ca29e0812d795f9..eb121ea57b0a910d6a75646f41f9ca249078eb37 100644
--- a/chromeos/printing/printer_translator.h
+++ b/chromeos/printing/printer_translator.h
@@ -19,15 +19,6 @@ namespace printing {
 
 CHROMEOS_EXPORT extern const char kPrinterId[];
 
-// Returns a new Printer populated with fields from |pref|.  Returns a nullptr
-// if |pref| does not contain an id field.
-CHROMEOS_EXPORT std::unique_ptr<Printer> PrefToPrinter(
-    const base::DictionaryValue& pref);
-
-// Returns a dictionary generated from the |printer| fields.
-CHROMEOS_EXPORT std::unique_ptr<base::DictionaryValue> PrinterToPref(
-    const Printer& printer);
-
 // Returns a new printer populated with the fields from |pref|.  Processes
 // dictionaries from policy i.e. cPanel.
 CHROMEOS_EXPORT std::unique_ptr<Printer> RecommendedPrinterToPrinter(