[CUPS] Implement the enterprise icon for printers in Print Preview Dialog.

chrome/browser/chromeos/printing/printer_pref_manager.cc

Index: chrome/browser/chromeos/printing/printer_pref_manager.cc
diff --git a/chrome/browser/chromeos/printing/printer_pref_manager.cc b/chrome/browser/chromeos/printing/printer_pref_manager.cc
index 3e52bf1ea9e5f0a46db689859aa443ab3a8f6a31..9d52df051827ff119cd14fdafa47718788f08821 100644
--- a/chrome/browser/chromeos/printing/printer_pref_manager.cc
+++ b/chrome/browser/chromeos/printing/printer_pref_manager.cc
@@ -139,6 +139,13 @@ std::unique_ptr<Printer> PrinterPrefManager::GetPrinter(
   return printer ? printing::PrefToPrinter(*printer) : nullptr;
 }
 
+bool PrinterPrefManager::IsEnterprisePrinter(
+    const std::string& printer_id) const {
+  return std::find(recommended_printer_ids_.begin(),
+                   recommended_printer_ids_.end(),
+                   printer_id) != recommended_printer_ids_.end();
+}
+
 void PrinterPrefManager::RegisterPrinter(std::unique_ptr<Printer> printer) {
   if (printer->id().empty())
     printer->set_id(base::GenerateGUID());