Fix build breakage by disabling a warning.

views/examples/message_box_example.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 VIEWS_EXAMPLES_MESSAGE_BOX_EXAMPLE_H_
 #define VIEWS_EXAMPLES_MESSAGE_BOX_EXAMPLE_H_
 
+#include "base/compiler_specific.h"
 #include "base/string_util.h"
 #include "views/controls/button/text_button.h"
 #include "views/controls/message_box_view.h"
 #include "views/controls/tabbed_pane/tabbed_pane.h"
 #include "views/examples/example_base.h"
 
 namespace examples {
 
 // A MessageBoxView example. This tests some of checkbox features
 // as well.
 class MessageBoxExample : protected ExampleBase, private views::ButtonListener {
  public:
   MessageBoxExample(views::TabbedPane* tabbed_pane, views::Label* message)
       : ExampleBase(message),
         message_box_view_(
             new MessageBoxView(0, L"Message Box Message", L"Default Prompt")),
-        status_(new views::TextButton(this, L"Show Status")),
-        toggle_(new views::TextButton(this, L"Toggle Checkbox")) {
+        ALLOW_THIS_IN_INITIALIZER_LIST(
+            status_(new views::TextButton(this, L"Show Status"))),
+        ALLOW_THIS_IN_INITIALIZER_LIST(
+            toggle_(new views::TextButton(this, L"Toggle Checkbox"))) {
     views::View* container = new views::View();
     tabbed_pane->AddTab(L"Message Box View", container);
 
     views::GridLayout* layout = new views::GridLayout(container);
     container->SetLayoutManager(layout);
 
     message_box_view_->SetCheckBoxLabel(L"Check Box");
 
     const int message_box_column = 0;
     views::ColumnSet* column_set = layout->AddColumnSet(message_box_column);
@@ skipping 38 matching lines @@
   // message box.
   views::Button* status_, *toggle_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBoxExample);
 };
 
 }  // namespace examples
 
 #endif  // VIEWS_EXAMPLES_MESSAGE_BOX_EXAMPLE_H_