[CSS Shapes] shape-margin in percentage units always computes to 0px

Source/core/rendering/shapes/Shape.cpp

Index: Source/core/rendering/shapes/Shape.cpp
diff --git a/Source/core/rendering/shapes/Shape.cpp b/Source/core/rendering/shapes/Shape.cpp
index 60925382763bf6d47b74089eac45ee46e5973f2f..7c1f5276af173e433225167f04c3a5ce6f6c6ccd 100644
--- a/Source/core/rendering/shapes/Shape.cpp
+++ b/Source/core/rendering/shapes/Shape.cpp
@@ -94,7 +94,7 @@ static inline FloatSize physicalSizeToLogical(const FloatSize& size, WritingMode
     return size.transposedSize();
 }
 
-PassOwnPtr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, Length margin)
+PassOwnPtr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, float margin)
 {
     ASSERT(basicShape);
 
@@ -169,12 +169,12 @@ PassOwnPtr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutS
     }
 
     shape->m_writingMode = writingMode;
-    shape->m_margin = floatValueForLength(margin, 0);
+    shape->m_margin = margin;
 
     return shape.release();
 }
 
-PassOwnPtr<Shape> Shape::createRasterShape(Image* image, float threshold, const LayoutRect& imageR, const LayoutRect& marginR, WritingMode writingMode, Length margin)
+PassOwnPtr<Shape> Shape::createRasterShape(Image* image, float threshold, const LayoutRect& imageR, const LayoutRect& marginR, WritingMode writingMode, float margin)
 {
     IntRect imageRect = pixelSnappedIntRect(imageR);
     IntRect marginRect = pixelSnappedIntRect(marginR);
@@ -211,17 +211,17 @@ PassOwnPtr<Shape> Shape::createRasterShape(Image* image, float threshold, const
 
     OwnPtr<RasterShape> rasterShape = adoptPtr(new RasterShape(intervals.release(), marginRect.size()));
     rasterShape->m_writingMode = writingMode;
-    rasterShape->m_margin = floatValueForLength(margin, 0);
+    rasterShape->m_margin = margin;
     return rasterShape.release();
 }
 
-PassOwnPtr<Shape> Shape::createLayoutBoxShape(const RoundedRect& roundedRect, WritingMode writingMode, const Length& margin)
+PassOwnPtr<Shape> Shape::createLayoutBoxShape(const RoundedRect& roundedRect, WritingMode writingMode, float margin)
 {
     FloatRect rect(0, 0, roundedRect.rect().width(), roundedRect.rect().height());
     FloatRoundedRect bounds(rect, roundedRect.radii());
     OwnPtr<Shape> shape = createInsetShape(bounds);
     shape->m_writingMode = writingMode;
-    shape->m_margin = floatValueForLength(margin, 0);
+    shape->m_margin = margin;
 
     return shape.release();
 }