Revert "Percent height content should respect the fixed height of its containing cell"

third_party/WebKit/Source/core/layout/LayoutBlock.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 1883 matching lines @@
     LayoutUnit stretchedFlexHeight(-1);
     if (isFlexItem())
         stretchedFlexHeight = toLayoutFlexibleBox(parent())->childLogicalHeightForPercentageResolution(*this);
 
     if (stretchedFlexHeight != LayoutUnit(-1)) {
         availableHeight = stretchedFlexHeight;
     } else if (isGridItem() && hasOverrideLogicalContentHeight()) {
         availableHeight = overrideLogicalContentHeight();
     } else if (style.logicalHeight().isFixed()) {
         LayoutUnit contentBoxHeight = adjustContentBoxLogicalHeightForBoxSizing(style.logicalHeight().value());
-        availableHeight = constrainContentBoxLogicalHeightByMinMax(
-            contentBoxHeight - scrollbarLogicalHeight(), LayoutUnit(-1)).clampNegativeToZero();
+        availableHeight = std::max(LayoutUnit(), constrainContentBoxLogicalHeightByMinMax(contentBoxHeight - scrollbarLogicalHeight(), LayoutUnit(-1)));
     } else if (style.logicalHeight().hasPercent() && !isOutOfFlowPositionedWithSpecifiedHeight) {
         LayoutUnit heightWithScrollbar = computePercentageLogicalHeight(style.logicalHeight());
         if (heightWithScrollbar != -1) {
             LayoutUnit contentBoxHeightWithScrollbar = adjustContentBoxLogicalHeightForBoxSizing(heightWithScrollbar);
             // We need to adjust for min/max height because this method does not
             // handle the min/max of the current block, its caller does. So the
             // return value from the recursive call will not have been adjusted
             // yet.
             LayoutUnit contentBoxHeight = constrainContentBoxLogicalHeightByMinMax(contentBoxHeightWithScrollbar - scrollbarLogicalHeight(), LayoutUnit(-1));
             availableHeight = std::max(LayoutUnit(), contentBoxHeight);
@@ skipping 10 matching lines @@
 
     return availableHeight;
 }
 
 bool LayoutBlock::hasDefiniteLogicalHeight() const
 {
     return availableLogicalHeightForPercentageComputation() != LayoutUnit(-1);
 }
 
 } // namespace blink