Update Windows UI on system color changes.

ui/views/widget/root_view.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_ROOT_VIEW_H_
 #define UI_VIEWS_WIDGET_ROOT_VIEW_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "ui/events/event_processor.h"
+#include "ui/native_theme/native_theme.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/focus/focus_search.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 namespace test {
 class WidgetTest;
 }
 
@@ skipping 16 matching lines @@
 //  sized to fill the bounds of the RootView (and hence the client area of the
 //  Widget). Call SetContentsView() after the associated Widget has been
 //  initialized to attach the contents view to the RootView.
 //  TODO(beng): Enforce no other callers to AddChildView/tree functions by
 //              overriding those methods as private here.
 //  TODO(beng): Clean up API further, make Widget a friend.
 //  TODO(sky): We don't really want to export this class.
 //
 class VIEWS_EXPORT RootView : public View,
                               public FocusTraversable,
-                              public ui::EventProcessor {
+                              public ui::EventProcessor,
+                              public ui::NativeThemeObserver {
  public:
   static const char kViewClassName[];
 
   // Creation and lifetime -----------------------------------------------------
   explicit RootView(Widget* widget);
   virtual ~RootView();
 
   // Tree operations -----------------------------------------------------------
 
   // Sets the "contents view" of the RootView. This is the single child view
@@ skipping 43 matching lines @@
   virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
   virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseWheel(const ui::MouseWheelEvent& event) OVERRIDE;
   virtual void SetMouseHandler(View* new_mouse_handler) OVERRIDE;
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
   virtual void UpdateParentLayer() OVERRIDE;
 
+  // Overridden from ui::NativeThemeObserver:
+  virtual void OnNativeThemeChange() OVERRIDE;
+
  protected:
   virtual void DispatchGestureEvent(ui::GestureEvent* event);
 
   // Overridden from View:
   virtual void ViewHierarchyChanged(
       const ViewHierarchyChangedDetails& details) OVERRIDE;
   virtual void VisibilityChanged(View* starting_from, bool is_visible) OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual gfx::Vector2d CalculateOffsetToAncestorWithLayer(
       ui::Layer** layer_parent) OVERRIDE;
@@ skipping 98 matching lines @@
   // Tracks drag state for a view.
   View::DragInfo drag_info_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RootView);
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_ROOT_VIEW_H_