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

content/public/browser/indexed_db_context.h

Index: content/public/browser/indexed_db_context.h
diff --git a/content/public/browser/indexed_db_context.h b/content/public/browser/indexed_db_context.h
index 91b8664175c4c212ddeea043a5d27e706d47f453..8c5128816c5569f3df63afc2195412afada46f24 100644
--- a/content/public/browser/indexed_db_context.h
+++ b/content/public/browser/indexed_db_context.h
@@ -24,8 +24,6 @@ namespace content {
 // Call these methods only on the WebKit thread.
 class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
  public:
-  virtual ~IndexedDBContext() {}
-
   // Methods used in response to QuotaManager requests.
   virtual std::vector<GURL> GetAllOrigins() = 0;
   virtual int64 GetOriginDiskUsage(const GURL& origin_url) = 0;
@@ -36,6 +34,10 @@ class IndexedDBContext : public base::RefCountedThreadSafe<IndexedDBContext> {
 
   // Get the file name of the local storage file for the given origin.
   virtual FilePath GetFilePathForTesting(const string16& origin_id) const = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<IndexedDBContext>;
+  virtual ~IndexedDBContext() {}
 };
 
 }  // namespace content