Move hit testing out of RenderLayer into RenderBox.

sky/engine/core/rendering/RenderLayerModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010, 2012 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 44 matching lines @@
     m_layer = adoptPtr(new RenderLayer(this, type));
     setHasLayer(true);
     m_layer->insertOnlyThisLayer();
 }
 
 bool RenderLayerModelObject::hasSelfPaintingLayer() const
 {
     return m_layer && m_layer->isSelfPaintingLayer();
 }
 
+void RenderLayerModelObject::collectSelfPaintingLayers(Vector<RenderBox*>& layers)
+{
+    for (RenderObject* child = slowFirstChild(); child; child = child->nextSibling()) {
+        if (child->isBox()) {
+            RenderBox* childBox = toRenderBox(child);
+            if (childBox->hasSelfPaintingLayer())
+                layers.append(childBox);
+            else
+                childBox->collectSelfPaintingLayers(layers);
+        } else if (child->isLayerModelObject()) {
+            toRenderLayerModelObject(child)->collectSelfPaintingLayers(layers);
+        }
+    }
+}
+
 void RenderLayerModelObject::willBeDestroyed()
 {
     RenderObject::willBeDestroyed();
     destroyLayer();
 }
 
 void RenderLayerModelObject::styleWillChange(StyleDifference diff, const RenderStyle& newStyle)
 {
     if (RenderStyle* oldStyle = style()) {
         if (parent()) {
@@ skipping 32 matching lines @@
     if (layer()) {
         // FIXME: Ideally we shouldn't need this setter but we can't easily infer an overflow-only layer
         // from the style.
         layer()->setLayerType(type);
         layer()->styleChanged(diff, oldStyle);
     }
 }
 
 } // namespace blink