Stop painting when receiving delegated frame

content/browser/web_contents/aura/overscroll_navigation_overlay.cc

 // Copyright 2014 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 "content/browser/web_contents/aura/overscroll_navigation_overlay.h"
 
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/aura/image_window_delegate.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 32 matching lines @@
     } else {
       SkISize size = canvas->sk_canvas()->getDeviceSize();
       if (size.width() != image_size_.width() ||
           size.height() != image_size_.height()) {
         canvas->DrawColor(SK_ColorWHITE);
       }
       canvas->DrawImageInt(image_.AsImageSkia(), 0, 0);
     }
   }
 
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+
   // Called when the layer's device scale factor has changed.
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
   }
 
   // Invoked prior to the bounds changing. The returned closured is run after
   // the bounds change.
   virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE {
     return base::Closure();
   }
 
@@ skipping 230 matching lines @@
   // pending entry has been created.
   int committed_entry_id =
       web_contents_->GetController().GetLastCommittedEntry()->GetUniqueID();
   if (committed_entry_id == pending_entry_id_ || !pending_entry_id_) {
     loading_complete_ = true;
     StopObservingIfDone();
   }
 }
 
 }  // namespace content