views: Migrate the cases of "new .*NativeTextButton(" to LabelButton.

ui/views/test/child_modal_window.h

 // Copyright (c) 2012 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 UI_VIEWS_TEST_CHILD_WMODAL_WINDOW_H_
 #define UI_VIEWS_TEST_CHILD_WMODAL_WINDOW_H_
 
 #include "ui/views/controls/button/button.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace views {
-class NativeTextButton;
+class LabelButton;
 class NativeViewHost;
 class Textfield;
 class View;
 class Widget;
 namespace test {
 
 void CreateChildModalParent(gfx::NativeView context);
 
 class ChildModalParent : public WidgetDelegateView,
                          public ButtonListener,
@@ skipping 21 matching lines @@
 
   // Overridden from ButtonListener:
   virtual void ButtonPressed(Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Overridden from WidgetObserver:
   virtual void OnWidgetDestroying(Widget* widget) OVERRIDE;
 
   // The button to toggle showing and hiding the child window. The child window
   // does not block input to this button.
-  NativeTextButton* button_;
+  LabelButton* button_;
 
   // The text field to indicate the keyboard focus.
   Textfield* textfield_;
 
   // The host for the modal parent.
   NativeViewHost* host_;
 
   // The modal parent of the child window. The child window blocks input to this
   // view.
   gfx::NativeWindow modal_parent_;
 
   // The child window.
   Widget* child_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildModalParent);
 };
 
 }  // namespace test
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_CHILD_WMODAL_WINDOW_H_