Virtual destructors should have virtual keyword.

content/browser/renderer_host/resource_dispatcher_host.h

 // Copyright (c) 2011 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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then forwards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 43 matching lines @@
 }  // namespace net
 
 namespace webkit_blob {
 class DeletableFileReference;
 }
 
 class ResourceDispatcherHost : public net::URLRequest::Delegate {
  public:
   explicit ResourceDispatcherHost(
       const ResourceQueue::DelegateSet& resource_queue_delegates);
-  ~ResourceDispatcherHost();
+  virtual ~ResourceDispatcherHost();
 
   void Initialize();
 
   // Puts the resource dispatcher host in an inactive state (unable to begin
   // new requests).  Cancels all pending requests.
   void Shutdown();
 
   // Returns true if the message was a resource message that was processed.
   // If it was, message_was_ok will be false iff the message was corrupt.
   bool OnMessageReceived(const IPC::Message& message,
@@ skipping 401 matching lines @@
   // to the source of the message.
   ResourceMessageFilter* filter_;
 
   static bool is_prefetch_enabled_;
 
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_