Always include floating children into visual overflow

Source/core/layout/LayoutBlockFlow.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1681 matching lines @@
 
     const FloatingObjectSet& floatingObjectSet = m_floatingObjects->set();
     FloatingObjectSetIterator end = floatingObjectSet.end();
     for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
         const FloatingObject& floatingObject = *it->get();
         if (floatingObject.isDescendant())
             addOverflowFromChild(floatingObject.layoutObject(), LayoutSize(xPositionForFloatIncludingMargin(floatingObject), yPositionForFloatIncludingMargin(floatingObject)));
     }
 }
 
-void LayoutBlockFlow::computeOverflow(LayoutUnit oldClientAfterEdge, bool recomputeFloats)
+void LayoutBlockFlow::computeOverflow(LayoutUnit oldClientAfterEdge)
 {
-    LayoutBlock::computeOverflow(oldClientAfterEdge, recomputeFloats);
-    if (recomputeFloats || createsNewFormattingContext() || hasSelfPaintingLayer())
-        addOverflowFromFloats();
+    LayoutBlock::computeOverflow(oldClientAfterEdge);
+    addOverflowFromFloats();
 }
 
 RootInlineBox* LayoutBlockFlow::createAndAppendRootInlineBox()
 {
     RootInlineBox* rootBox = createRootInlineBox();
     m_lineBoxes.appendLineBox(rootBox);
 
     return rootBox;
 }
 
@@ skipping 1333 matching lines @@
     FrameView* frameView = document().view();
     LayoutUnit top = (style()->position() == FixedPosition) ? 0 : frameView->scrollOffset().height();
     int visibleHeight = frameView->visibleContentRect(IncludeScrollbars).height();
     if (size().height() < visibleHeight)
         top += (visibleHeight - size().height()) / 2;
     setY(top);
     dialog->setCentered(top);
 }
 
 } // namespace blink