RefCounted types should not have public destructors, chromeos edition

ash/desktop_background/desktop_background_controller.cc

Index: ash/desktop_background/desktop_background_controller.cc
diff --git a/ash/desktop_background/desktop_background_controller.cc b/ash/desktop_background/desktop_background_controller.cc
index 8a3205f4300ca933731c4dd27e8c0ce30634b101..8a308510d7d692d6fbadb0674effa624f17bf88a 100644
--- a/ash/desktop_background/desktop_background_controller.cc
+++ b/ash/desktop_background/desktop_background_controller.cc
@@ -52,7 +52,7 @@ struct DesktopBackgroundController::WallpaperData {
 // loading.
 class DesktopBackgroundController::WallpaperOperation
     : public base::RefCountedThreadSafe<
-    DesktopBackgroundController::WallpaperOperation> {
+          DesktopBackgroundController::WallpaperOperation> {
  public:
   explicit WallpaperOperation(int index) : index_(index) {
   }
@@ -79,6 +79,8 @@ class DesktopBackgroundController::WallpaperOperation
   friend class base::RefCountedThreadSafe<
       DesktopBackgroundController::WallpaperOperation>;
 
+  ~WallpaperOperation() {}
+
   base::CancellationFlag cancel_flag_;
 
   scoped_ptr<WallpaperData> wallpaper_data_;