Percent height content should respect the height of its containing cell

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 304 matching lines @@
                                                          : borderBottom());
   }
 
   LayoutUnit paddingLogicalWidth() const {
     return paddingStart() + paddingEnd();
   }
   LayoutUnit paddingLogicalHeight() const {
     return paddingBefore() + paddingAfter();
   }
 
+  LayoutUnit collapsedBorderAndCSSPaddingLogicalWidth() const {
+    return computedCSSPaddingStart() + computedCSSPaddingEnd() + borderStart() +
+           borderEnd();
+  }
+  LayoutUnit collapsedBorderAndCSSPaddingLogicalHeight() const {
+    return computedCSSPaddingBefore() + computedCSSPaddingAfter() +
+           borderBefore() + borderAfter();
+  }
+
   virtual LayoutRectOutsets marginBoxOutsets() const = 0;
   virtual LayoutUnit marginTop() const = 0;
   virtual LayoutUnit marginBottom() const = 0;
   virtual LayoutUnit marginLeft() const = 0;
   virtual LayoutUnit marginRight() const = 0;
   virtual LayoutUnit marginBefore(
       const ComputedStyle* otherStyle = nullptr) const = 0;
   virtual LayoutUnit marginAfter(
       const ComputedStyle* otherStyle = nullptr) const = 0;
   virtual LayoutUnit marginStart(
@@ skipping 181 matching lines @@
   std::unique_ptr<PaintLayer> m_layer;
 
   std::unique_ptr<LayoutBoxModelObjectRareData> m_rareData;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, isBoxModelObject());
 
 }  // namespace blink
 
 #endif  // LayoutBoxModelObject_h