RefCounted types should not have public destructors, content/browser part 1

content/browser/fileapi/chrome_blob_storage_context.h

Index: content/browser/fileapi/chrome_blob_storage_context.h
diff --git a/content/browser/fileapi/chrome_blob_storage_context.h b/content/browser/fileapi/chrome_blob_storage_context.h
index 691734017dc9beaf1b3c48410fbff0024886b8cb..4f737ae8d806e286765ddbf4454df62c6c232cb3 100644
--- a/content/browser/fileapi/chrome_blob_storage_context.h
+++ b/content/browser/fileapi/chrome_blob_storage_context.h
@@ -30,22 +30,27 @@ struct ChromeBlobStorageContextDeleter;
 // All methods, except the ctor, are expected to be called on
 // the IO thread (unless specifically called out in doc comments).
 class CONTENT_EXPORT ChromeBlobStorageContext
-    : public base::RefCountedThreadSafe<
-          ChromeBlobStorageContext, ChromeBlobStorageContextDeleter> {
+    : public base::RefCountedThreadSafe<ChromeBlobStorageContext,
+                                        ChromeBlobStorageContextDeleter> {
  public:
+  ChromeBlobStorageContext();
+
   static ChromeBlobStorageContext* GetFor(
       content::BrowserContext* browser_context);
 
-  ChromeBlobStorageContext();
-  virtual ~ChromeBlobStorageContext();
-
   void InitializeOnIOThread();
 
   webkit_blob::BlobStorageController* controller() const {
     return controller_.get();
   }
 
+ protected:
+  virtual ~ChromeBlobStorageContext();
+
  private:
+  friend class base::DeleteHelper<ChromeBlobStorageContext>;
+  friend class base::RefCountedThreadSafe<ChromeBlobStorageContext,
+                                          ChromeBlobStorageContextDeleter>;
   friend struct ChromeBlobStorageContextDeleter;
 
   void DeleteOnCorrectThread() const;