Introduce IntrinsicSizingInfo

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

Index: third_party/WebKit/Source/core/layout/LayoutBox.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.h b/third_party/WebKit/Source/core/layout/LayoutBox.h
index 39c0102322fb52b1ac6ce3ef2d1d17b6e461d0e8..c76c483e2a4f812f9bbbc5272d6db8bf74ee599a 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -823,7 +823,17 @@ public:
     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;