[CSS Shapes] First line gets incorrectly adjusted in shape-inside due to rounding

Source/core/rendering/shapes/BoxShape.h

 /*
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 30 matching lines @@
         : Shape()
         , m_bounds(bounds)
     {
     }
 
     virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE;
     virtual LayoutRect shapePaddingLogicalBoundingBox() const OVERRIDE;
     virtual bool isEmpty() const OVERRIDE { return m_bounds.isEmpty(); }
     virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const OVERRIDE;
     virtual void getIncludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const OVERRIDE;
-    virtual bool firstIncludedIntervalLogicalTop(LayoutUnit minLogicalIntervalTop, const LayoutSize& minLogicalIntervalSize, LayoutUnit&) const OVERRIDE;
+    virtual bool firstIncludedIntervalLogicalTop(LayoutUnit minLogicalIntervalTop, const FloatSize& minLogicalIntervalSize, LayoutUnit&) const OVERRIDE;
 
 private:
     FloatRoundedRect shapeMarginBounds() const;
     FloatRoundedRect shapePaddingBounds() const;
 
     FloatRoundedRect m_bounds;
 };
 
 } // namespace WebCore
 
 #endif // BoxShape_h