RefCounted types should not have public destructors, printing/ and ui/

printing/backend/print_backend_chromeos.cc

Index: printing/backend/print_backend_chromeos.cc
diff --git a/printing/backend/print_backend_chromeos.cc b/printing/backend/print_backend_chromeos.cc
index 767251c638b79e5efba7ed5913899663e135f6da..003b0fd0c7b70d335a31d175adccfaf6494d762c 100644
--- a/printing/backend/print_backend_chromeos.cc
+++ b/printing/backend/print_backend_chromeos.cc
@@ -12,21 +12,19 @@ namespace printing {
 class PrintBackendChromeOS : public PrintBackend {
  public:
   PrintBackendChromeOS();
-  virtual ~PrintBackendChromeOS() {}
 
   // PrintBackend implementation.
-  virtual bool EnumeratePrinters(PrinterList* printer_list);
-
-  virtual std::string GetDefaultPrinterName();
-
-  virtual bool GetPrinterCapsAndDefaults(const std::string& printer_name,
-                                         PrinterCapsAndDefaults* printer_info);
-
-  virtual std::string GetPrinterDriverInfo(const std::string& printer_name);
-
-  virtual bool IsValidPrinter(const std::string& printer_name);
-
- private:
+  virtual bool EnumeratePrinters(PrinterList* printer_list) OVERRIDE;
+  virtual std::string GetDefaultPrinterName() OVERRIDE;
+  virtual bool GetPrinterCapsAndDefaults(
+      const std::string& printer_name,
+      PrinterCapsAndDefaults* printer_info) OVERRIDE;
+  virtual std::string GetPrinterDriverInfo(
+      const std::string& printer_name) OVERRIDE;
+  virtual bool IsValidPrinter(const std::string& printer_name) OVERRIDE;
+
+ protected:
+  virtual ~PrintBackendChromeOS() {}
 };
 
 PrintBackendChromeOS::PrintBackendChromeOS() {}