Introduce IntrinsicSizingInfo

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 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 805 matching lines @@
 
     LayoutRect logicalVisualOverflowRectForPropagation(const ComputedStyle&) const;
     LayoutRect visualOverflowRectForPropagation(const ComputedStyle&) const;
     LayoutRect logicalLayoutOverflowRectForPropagation(const ComputedStyle&) const;
     LayoutRect layoutOverflowRectForPropagation(const ComputedStyle&) const;
 
     bool hasOverflowModel() const { return m_overflow; }
     bool hasVisualOverflow() const { return m_overflow && !borderBoxRect().contains(m_overflow->visualOverflowRect()); }
 
     virtual bool needsPreferredWidthsRecalculation() const;
-    virtual void computeIntrinsicRatioInformation(FloatSize& /* intrinsicSize */, double& /* intrinsicRatio */) const { }
+
+    struct IntrinsicSizingInfo {
+        STACK_ALLOCATED();
+        IntrinsicSizingInfo() : aspectRatio(0) {}
+
+        FloatSize size;
+        double aspectRatio;
+    };
+
+    // Computes the logical intrinsic sizing information.
+    virtual void computeIntrinsicSizingInfo(IntrinsicSizingInfo&) const { }
 
     IntSize scrolledContentOffset() const;
     void mapScrollingContentsRectToBoxSpace(LayoutRect&) const;
     void applyOverflowClip(LayoutRect&) const;
 
     virtual bool hasRelativeLogicalWidth() const;
     virtual bool hasRelativeLogicalHeight() const;
 
     bool hasHorizontalLayoutOverflow() const
     {
@@ skipping 280 matching lines @@
         if (UNLIKELY(m_inlineBoxWrapper != nullptr))
             deleteLineBoxWrapper();
     }
 
     m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif // LayoutBox_h