Get rid of HitTestChildBlockBackground walk.

sky/engine/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
  * License as published by the Free Software Foundation; either
@@ skipping 1061 matching lines @@
     // Check if the point is outside radii.
     if (style()->hasBorderRadius()) {
         LayoutRect borderRect = borderBoxRect();
         borderRect.moveBy(adjustedLocation);
         RoundedRect border = style()->getRoundedBorderFor(borderRect);
         if (!locationInContainer.intersects(border))
             return false;
     }
 
     // Now hit test our background
-    if (hitTestAction == HitTestBlockBackground || hitTestAction == HitTestChildBlockBackground) {
+    if (hitTestAction == HitTestBlockBackground) {
         LayoutRect boundsRect(adjustedLocation, size());
         if (visibleToHitTestRequest(request) && locationInContainer.intersects(boundsRect)) {
             updateHitTestResult(result, locationInContainer.point() - localOffset);
             if (!result.addNodeToRectBasedTestResult(node(), request, locationInContainer, boundsRect))
                 return true;
         }
     }
 
     return false;
 }
 
 bool RenderBlock::hitTestContents(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
 {
-    // Hit test our children.
-    HitTestAction childHitTest = hitTestAction;
-    if (hitTestAction == HitTestChildBlockBackgrounds)
-        childHitTest = HitTestChildBlockBackground;
     for (RenderBox* child = lastChildBox(); child; child = child->previousSiblingBox()) {
-        if (!child->hasSelfPaintingLayer() && child->nodeAtPoint(request, result, locationInContainer, accumulatedOffset, childHitTest))
+        if (!child->hasSelfPaintingLayer() && child->nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction))
             return true;
     }
 
     return false;
 }
 
 Position RenderBlock::positionForBox(InlineBox *box, bool start) const
 {
     if (!box)
         return Position();
@@ skipping 655 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace blink