RefCounted types should not have public destructors, content/ remaining bits

content/test/mock_download_manager.h

Index: content/test/mock_download_manager.h
diff --git a/content/test/mock_download_manager.h b/content/test/mock_download_manager.h
index 4fb8512cac1584631ec338c382dd9d03ad280094..6ced362f554971d50251157f21b6e4daeb5f7acf 100644
--- a/content/test/mock_download_manager.h
+++ b/content/test/mock_download_manager.h
@@ -21,7 +21,6 @@ namespace content {
 class MockDownloadManager : public content::DownloadManager {
  public:
   MockDownloadManager();
-  virtual ~MockDownloadManager();
 
   // DownloadManager:
   MOCK_METHOD0(Shutdown, void());
@@ -91,6 +90,9 @@ class MockDownloadManager : public content::DownloadManager {
                                               const FilePath& chosen_file));
   MOCK_METHOD1(GetActiveDownload, content::DownloadItem*(int32 download_id));
   MOCK_METHOD1(SetFileManager, void(DownloadFileManager* file_manager));
+
+ protected:
+  virtual ~MockDownloadManager();
 };
 
 }  // namespace content