[css-grid] Fix indefinite height detection

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

 /*
  * 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 Apple 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 208 matching lines @@
     LayoutUnit startOffsetForContent() const { return style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
     LayoutUnit endOffsetForContent() const { return !style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
 
     virtual LayoutUnit logicalLeftSelectionOffset(const LayoutBlock* rootBlock, LayoutUnit position) const;
     virtual LayoutUnit logicalRightSelectionOffset(const LayoutBlock* rootBlock, LayoutUnit position) const;
 
 #if ENABLE(ASSERT)
     void checkPositionedObjectsNeedLayout();
 #endif
 
+    LayoutUnit availableLogicalHeightForPercentageComputation() const;
+    bool hasDefiniteLogicalHeight() const;
+
 protected:
     bool recalcNormalFlowChildOverflowIfNeeded(LayoutObject*);
     bool recalcPositionedDescendantsOverflowAfterStyleChange();
 public:
     virtual bool recalcChildOverflowAfterStyleChange();
     bool recalcOverflowAfterStyleChange();
 
     // An example explaining layout tree structure about first-line style:
     // <style>
     //   #enclosingFirstLineStyleBlock::first-line { ... }
@@ skipping 179 matching lines @@
     // This is necessary for now for interoperability between the old and new
     // layout code. Primarily for calling layoutPositionedObjects at the moment.
     friend class NGBox;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlock, isLayoutBlock());
 
 } // namespace blink
 
 #endif // LayoutBlock_h