Track printer installations for each configuration.

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 eb121ea57b0a910d6a75646f41f9ca249078eb37..ea506c95f0761ec61c87461e6b2d601af2eddf0c 100644
--- a/chromeos/printing/printer_translator.h
+++ b/chromeos/printing/printer_translator.h
@@ -22,7 +22,8 @@ CHROMEOS_EXPORT extern const char kPrinterId[];
 // Returns a new printer populated with the fields from |pref|.  Processes
 // dictionaries from policy i.e. cPanel.
 CHROMEOS_EXPORT std::unique_ptr<Printer> RecommendedPrinterToPrinter(
-    const base::DictionaryValue& pref);
+    const base::DictionaryValue& pref,
+    int64_t timestamp);
 
 }  // namespace printing
 }  // namespace chromeos