Fix shrink-to-fit when children's writing-mode is orthogonal

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 88 matching lines @@
 
 LayoutBlock::LayoutBlock(ContainerNode* node)
     : LayoutBox(node)
     , m_hasMarginBeforeQuirk(false)
     , m_hasMarginAfterQuirk(false)
     , m_beingDestroyed(false)
     , m_hasMarkupTruncation(false)
     , m_widthAvailableToChildrenChanged(false)
     , m_hasOnlySelfCollapsingChildren(false)
     , m_descendantsWithFloatsMarkedForLayout(false)
+    , m_needsRecalcLogicalWidthAfterLayoutChildren(false)
 {
     // LayoutBlockFlow calls setChildrenInline(true).
     // By default, subclasses do not have inline children.
 }
 
 static void removeBlockFromDescendantAndContainerMaps(LayoutBlock* block, TrackedDescendantsMap*& descendantMap, TrackedContainerMap*& containerMap)
 {
     if (OwnPtr<TrackedLayoutBoxListHashSet> descendantSet = descendantMap->take(block)) {
         for (auto& descendant : *descendantSet) {
             TrackedContainerMap::iterator it = containerMap->find(descendant);
@@ skipping 2023 matching lines @@
     // Always make sure these values are non-negative.
     minLogicalWidth = std::max<LayoutUnit>(0, minLogicalWidth);
     maxLogicalWidth = std::max<LayoutUnit>(0, maxLogicalWidth);
 
     maxLogicalWidth = std::max(floatLeftWidth + floatRightWidth, maxLogicalWidth);
 }
 
 void LayoutBlock::computeChildPreferredLogicalWidths(LayoutObject& child, LayoutUnit& minPreferredLogicalWidth, LayoutUnit& maxPreferredLogicalWidth) const
 {
     if (child.isBox() && child.isHorizontalWritingMode() != isHorizontalWritingMode()) {
+        // If the child is an orthogonal flow, child's height determines the width, but the height is not available until layout.
+        // http://dev.w3.org/csswg/css-writing-modes-3/#orthogonal-shrink-to-fit
+        if (!child.needsLayout()) {
+            minPreferredLogicalWidth = maxPreferredLogicalWidth = toLayoutBox(child).logicalHeight();
+            return;
+        }
+        m_needsRecalcLogicalWidthAfterLayoutChildren = true;
         minPreferredLogicalWidth = maxPreferredLogicalWidth = toLayoutBox(child).computeLogicalHeightWithoutLayout();
         return;
     }
     minPreferredLogicalWidth = child.minPreferredLogicalWidth();
     maxPreferredLogicalWidth = child.maxPreferredLogicalWidth();
+    if (child.isLayoutBlock() && toLayoutBlock(child).needsRecalcLogicalWidthAfterLayoutChildren())
+        m_needsRecalcLogicalWidthAfterLayoutChildren = true;
 }
 
 bool LayoutBlock::hasLineIfEmpty() const
 {
     if (!node())
         return false;
 
     if (node()->isRootEditableElement())
         return true;
 
@@ skipping 751 matching lines @@
 void LayoutBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const LayoutObject* obj) const
 {
     showLayoutObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace blink