Flexbox: Allow intrinsic aspect ratios to inform main-size calculation

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index 615432111823054f598e7f2684635d703c08b0fd..d7161e4d701dd333c002e0c0ed13fd936983c992 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -605,6 +605,8 @@ public:
 
     bool isSelectionBorder() const;
 
+    bool hasAspectRatio() const { return isReplaced() && (isImage() || isVideo() || isCanvas()); }
+
     bool hasClip() const { return isOutOfFlowPositioned() && !style()->hasAutoClip(); }
     bool hasOverflowClip() const { return m_bitfields.hasOverflowClip(); }
     bool hasClipOrOverflowClip() const { return hasClip() || hasOverflowClip(); }