Fix MenuModelAdapter clang build

views/controls/menu/menu_model_adapter_unittest.cc

 // 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.
 
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/models/menu_model.h"
 #include "ui/base/models/menu_model_delegate.h"
 #include "views/controls/menu/menu_item_view.h"
 #include "views/controls/menu/menu_model_adapter.h"
 #include "views/controls/menu/submenu_view.h"
 #include "views/test/views_test_base.h"
 
 namespace {
 
 // Base command id for test menu and its submenu.
 const int kRootIdBase = 100;
 const int kSubmenuIdBase = 200;
 
 // Offset to return for GetFirstItemIndex().  This is an arbitrary
 // number to ensure that we aren't assuming it is 0.
 const int kFirstItemIndex = 25;
 
 class MenuModelBase : public ui::MenuModel {
  public:
   MenuModelBase(int command_id_base) : command_id_base_(command_id_base),
                                        last_activation_(-1) {
   }
 
+  virtual ~MenuModelBase() {
+  }
+
   // ui::MenuModel implementation:
 
   virtual bool HasIcons() const OVERRIDE {
     return false;
   }
 
   virtual int GetFirstItemIndex(gfx::NativeMenu native_menu) const OVERRIDE {
     return kFirstItemIndex;
   }
 
@@ skipping 111 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(MenuModelBase);
 };
 
 class SubmenuModel : public MenuModelBase {
  public:
   SubmenuModel() : MenuModelBase(kSubmenuIdBase) {
     items_.push_back(Item(TYPE_COMMAND, "submenu item 0", NULL));
     items_.push_back(Item(TYPE_COMMAND, "submenu item 1", NULL));
   }
 
+  virtual ~SubmenuModel() {
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SubmenuModel);
 };
 
 class RootModel : public MenuModelBase {
  public:
   RootModel() : MenuModelBase(kRootIdBase) {
     submenu_model_.reset(new SubmenuModel);
 
     items_.push_back(Item(TYPE_COMMAND, "command 0", NULL));
     items_.push_back(Item(TYPE_CHECK, "check 1", NULL));
     items_.push_back(Item(TYPE_SEPARATOR, "", NULL));
     items_.push_back(Item(TYPE_SUBMENU, "submenu 3", submenu_model_.get()));
     items_.push_back(Item(TYPE_RADIO, "radio 4", NULL));
   }
 
+  virtual ~RootModel() {
+  }
+
  private:
   scoped_ptr<MenuModel> submenu_model_;
 
   DISALLOW_COPY_AND_ASSIGN(RootModel);
 };
 
 }  // namespace
 
 namespace views {
 
@@ skipping 94 matching lines @@
     }
 
     // Check activation.
     static_cast<views::MenuDelegate*>(&delegate)->ExecuteCommand(id);
     EXPECT_EQ(i + kFirstItemIndex, submodel->last_activation());
     submodel->set_last_activation(-1);
   }
 }
 
 }  // namespace views