Virtual destructors should have virtual keyword.

webkit/tools/test_shell/layout_test_controller.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.
 
 /*
   LayoutTestController class:
   Bound to a JavaScript window.layoutTestController object using the
   CppBoundClass::BindToJavascript(), this allows layout tests that are run in
   the test_shell (or, in principle, any web page loaded into a client app built
   with this class) to control various aspects of how the tests are run and what
   sort of output they produce.
 */
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_LAYOUT_TEST_CONTROLLER_H_
 #define WEBKIT_TOOLS_TEST_SHELL_LAYOUT_TEST_CONTROLLER_H_
 
 #include <queue>
 
 #include "base/timer.h"
 #include "base/string16.h"
 #include "webkit/glue/cpp_bound_class.h"
 
 class TestShell;
 
 class LayoutTestController : public CppBoundClass {
  public:
   // Builds the property and method lists needed to bind this class to a JS
   // object.
   LayoutTestController(TestShell* shell);
-  ~LayoutTestController();
+  virtual ~LayoutTestController();
 
   // By default, tests end when page load is complete.  These methods are used
   // to delay the completion of the test until notifyDone is called.
   void waitUntilDone(const CppArgumentList& args, CppVariant* result);
   void notifyDone(const CppArgumentList& args, CppVariant* result);
 
   // The fallback method is called when a nonexistent method is called on
   // the layout test controller object.
   // It is usefull to catch typos in the JavaScript code (a few layout tests
   // do have typos in them) and it allows the script to continue running in
@@ skipping 91 matching lines @@
   // DidStartProvisionalLoadForFrame callback.
   static bool stop_provisional_frame_loads_;
 
   // If true, don't dump output until notifyDone is called.
   static bool wait_until_done_;
 
   static WorkQueue work_queue_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_LAYOUT_TEST_CONTROLLER_H_