Stop painting when receiving delegated frame

ash/wm/boot_splash_screen_chromeos.cc

 // 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.
 
 #include "ash/wm/boot_splash_screen_chromeos.h"
 
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/x/x11_util.h"
@@ skipping 25 matching lines @@
     // https://codereview.chromium.org/10543125
 #if defined(USE_X11)
     ui::CopyAreaToCanvas(host_->GetAcceleratedWidget(),
         host_->GetBounds(), gfx::Point(), canvas);
 #else
     // TODO(spang): Figure out what to do here.
     NOTIMPLEMENTED();
 #endif
   }
 
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {}
 
   virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE {
     return base::Closure();
   }
 
  private:
   aura::WindowTreeHost* host_;  // not owned
 
   DISALLOW_COPY_AND_ASSIGN(CopyHostContentLayerDelegate);
@@ skipping 14 matching lines @@
 }
 
 void BootSplashScreen::StartHideAnimation(base::TimeDelta duration) {
   ui::ScopedLayerAnimationSettings settings(layer_->GetAnimator());
   settings.SetTransitionDuration(duration);
   settings.SetPreemptionStrategy(ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
   layer_->SetOpacity(0.0f);
 }
 
 }  // namespace ash