Adds View::GetNativeTheme() to get the NativeTheme. The interesting

ui/views/widget/widget.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_WIDGET_WIDGET_H_
 #define UI_VIEWS_WIDGET_WIDGET_H_
 
 #include <set>
 #include <stack>
 #include <vector>
@@ skipping 27 matching lines @@
 namespace gfx {
 class Canvas;
 class Point;
 class Rect;
 }
 
 namespace ui {
 class Accelerator;
 class Compositor;
 class Layer;
+class NativeTheme;
 class OSExchangeData;
 class ThemeProvider;
 }
 
 namespace views {
 
 class DefaultThemeProvider;
 class DesktopRootWindowHost;
 class InputMethod;
 class NativeWidget;
@@ skipping 366 matching lines @@
 
   // Returns whether the Widget is visible to the user.
   virtual bool IsVisible() const;
 
   // Returns whether the Widget is customized for accessibility.
   bool IsAccessibleWidget() const;
 
   // Returns the ThemeProvider that provides theme resources for this Widget.
   virtual ui::ThemeProvider* GetThemeProvider() const;
 
+  ui::NativeTheme* GetNativeTheme();
+
   // Returns the FocusManager for this widget.
   // Note that all widgets in a widget hierarchy share the same focus manager.
   FocusManager* GetFocusManager();
   const FocusManager* GetFocusManager() const;
 
   // Returns the InputMethod for this widget.
   // Note that all widgets in a widget hierarchy share the same input method.
   InputMethod* GetInputMethod();
 
   // Starts a drag operation for the specified view. This blocks until the drag
@@ skipping 355 matching lines @@
 
   // Is |root_layers_| out of date?
   bool root_layers_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(Widget);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WIDGET_H_