RefCounted types should not have public destructors, delegate cleanup

content/public/browser/download_manager_delegate.cc

Index: content/public/browser/download_manager_delegate.cc
diff --git a/content/public/browser/download_manager_delegate.cc b/content/public/browser/download_manager_delegate.cc
index fb911b04539b24f5dd51b0c6d4d10d526e59c311..bb177c1fdde9f3c465d79cda0237c93eb8bc7963 100644
--- a/content/public/browser/download_manager_delegate.cc
+++ b/content/public/browser/download_manager_delegate.cc
@@ -9,9 +9,6 @@
 
 namespace content {
 
-DownloadManagerDelegate::~DownloadManagerDelegate() {
-}
-
 DownloadId DownloadManagerDelegate::GetNextId() {
   return DownloadId::Invalid();
 }
@@ -50,4 +47,6 @@ bool DownloadManagerDelegate::GenerateFileHash() {
   return false;
 }
 
+DownloadManagerDelegate::~DownloadManagerDelegate() {}
+
 }  // namespace content