Virtual destructors should have virtual keyword.

webkit/blob/view_blob_internals_job.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_
 #define WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_
 
 #include <string>
 
 #include "base/task.h"
@@ skipping 16 matching lines @@
                        BlobStorageController* blob_storage_controller);
 
   virtual void Start();
   virtual bool GetData(std::string* mime_type,
                        std::string* charset,
                        std::string* data) const;
   virtual bool IsRedirectResponse(GURL* location, int* http_status_code);
   virtual void Kill();
 
  private:
-  ~ViewBlobInternalsJob();
+  virtual ~ViewBlobInternalsJob();
 
   void DoWorkAsync();
   void GenerateHTML(std::string* out) const;
   static void GenerateHTMLForBlobData(const BlobData& blob_data,
                                       std::string* out);
 
   BlobStorageController* blob_storage_controller_;
   ScopedRunnableMethodFactory<ViewBlobInternalsJob> method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewBlobInternalsJob);
 };
 
 }  // namespace webkit_blob
 
 #endif  // WEBKIT_BLOB_VIEW_BLOB_INTERNALS_JOB_H_