Stop painting when receiving delegated frame

chrome/browser/chromeos/ui/focus_ring_layer.h

 // Copyright 2013 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 CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 #define CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/compositor/layer_delegate.h"
@@ skipping 21 matching lines @@
 
   // Create the layer and update its bounds and position in the hierarchy.
   void Update();
 
   // Updates the focus ring layer for the view or clears it if |view| is NULL.
   void SetForView(views::View* view);
 
  private:
   // ui::LayerDelegate overrides:
   virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE;
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
   virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE;
 
   // The window containing focus.
   aura::Window* window_;
 
   // The current root window containing the focused object.
   aura::Window* root_window_;
 
   // The bounding rectangle of the focused object, in |window_| coordinates.
   gfx::Rect focus_ring_;
 
   // The current layer.
   scoped_ptr<ui::Layer> layer_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusRingLayer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_