Move OSExchangeData from src/app to src/ui/base/dragdrop...

views/widget/widget_gtk.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.
 
 #ifndef VIEWS_WIDGET_WIDGET_GTK_H_
 #define VIEWS_WIDGET_WIDGET_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include "app/active_window_watcher_x.h"
 #include "app/gtk_signal.h"
 #include "base/message_loop.h"
 #include "gfx/size.h"
 #include "views/focus/focus_manager.h"
 #include "views/widget/widget.h"
 
-class OSExchangeData;
-class OSExchangeDataProviderGtk;
-
 namespace gfx {
 class Rect;
 }
 
+namespace ui {
+class OSExchangeData;
+class OSExchangeDataProviderGtk;
+}
+using ui::OSExchangeData;
+using ui::OSExchangeDataProviderGtk;
+
 namespace views {
 
 class DefaultThemeProvider;
 class DropTargetGtk;
 class FocusSearch;
 class TooltipManagerGtk;
 class View;
 class WindowGtk;
 
 // Widget implementation for GTK.
@@ skipping 411 matching lines @@
 
   // Indicates if we should handle the upcoming Alt key release event.
   bool should_handle_menu_key_release_;
 
   DISALLOW_COPY_AND_ASSIGN(WidgetGtk);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_WIDGET_GTK_H_