Virtual destructors should have virtual keyword.

chrome/test/render_view_test.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.
 
 #ifndef CHROME_TEST_RENDER_VIEW_TEST_H_
 #define CHROME_TEST_RENDER_VIEW_TEST_H_
 #pragma once
 
 #include <string>
 
@@ skipping 26 matching lines @@
   // A special WebKitClientImpl class for getting rid off the dependency to the
   // sandbox, which is not available in RenderViewTest.
   class RendererWebKitClientImplNoSandbox : public RendererWebKitClientImpl {
    public:
     virtual WebKit::WebSandboxSupport* sandboxSupport() {
       return NULL;
     }
   };
 
   RenderViewTest();
-  ~RenderViewTest();
+  virtual ~RenderViewTest();
 
  protected:
   // Spins the message loop to process all messages that are currently pending.
   void ProcessPendingMessages();
 
   // Returns a pointer to the main frame.
   WebKit::WebFrame* GetMainFrame();
 
   // Executes the given JavaScript in the context of the main frame. The input
   // is a NULL-terminated UTF-8 string.
@@ skipping 44 matching lines @@
   scoped_ptr<RendererMainPlatformDelegate> platform_;
   scoped_ptr<MainFunctionParams> params_;
   scoped_ptr<CommandLine> command_line_;
   scoped_ptr<SandboxInitWrapper> sandbox_init_wrapper_;
 
   autofill::PasswordAutofillManager* password_autofill_;
   autofill::AutofillAgent* autofill_agent_;
 };
 
 #endif  // CHROME_TEST_RENDER_VIEW_TEST_H_