Virtual destructors should have virtual keyword.

net/tools/flip_server/simple_buffer.h

 // Copyright (c) 2009 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 NET_TOOLS_FLIP_SERVER_SIMPLE_BUFFER_H__
 #define NET_TOOLS_FLIP_SERVER_SIMPLE_BUFFER_H__
 #pragma once
 
 #include <string>
 
 #include "net/tools/flip_server/buffer_interface.h"
 
 namespace net {
 
 class SimpleBuffer : public BufferInterface {
  public:
   SimpleBuffer();
   explicit SimpleBuffer(int size);
-  virtual ~SimpleBuffer() {
-    delete[] storage_;
-  }
+  virtual ~SimpleBuffer();
 
   std::string str() const;
 
   typedef char * iterator;
   typedef const char * const_iterator;
 
   iterator begin() { return storage_ + read_idx_; }
   const_iterator begin() const { return storage_ + read_idx_; }
 
   iterator end() { return storage_ + write_idx_; }
@@ skipping 53 matching lines @@
   int read_idx_;
   int storage_size_;
 
  private:
   //DISALLOW_COPY_AND_ASSIGN(SimpleBuffer);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_FLIP_SERVER_SIMPLE_BUFFER_H__
-