WIP: snap-width

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 a8e98dfe7b5b82f3bf635a83bfac83fc9bcc4272..390811e252e94237ae83d6d688d2ae81efdadab4 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -712,7 +712,7 @@ public:
     LayoutUnit computePercentageLogicalHeight(const Length& height) const;
 
     // Block flows subclass availableWidth/Height to handle multi column layout (shrinking the width/height available to children when laying out.)
-    LayoutUnit availableLogicalWidth() const { return contentLogicalWidth(); }
+    LayoutUnit availableLogicalWidth() const { return LIKELY(!styleRef().snapWidth()) ? contentLogicalWidth() : snapContentLogicalWidth(); }
     LayoutUnit availableLogicalHeight(AvailableLogicalHeightType) const;
     LayoutUnit availableLogicalHeightUsing(const Length&, AvailableLogicalHeightType) const;
 
@@ -976,6 +976,7 @@ private:
     void updateShapeOutsideInfoAfterStyleChange(const ComputedStyle&, const ComputedStyle* oldStyle);
     void updateGridPositionAfterStyleChange(const ComputedStyle*);
 
+    LayoutUnit snapContentLogicalWidth() const;
     bool autoWidthShouldFitContent() const;
     LayoutUnit shrinkToFitLogicalWidth(LayoutUnit availableLogicalWidth, LayoutUnit bordersPlusPadding) const;