Convert animation and renderer code to know about BorderImageLength

Source/core/rendering/style/RenderStyle.cpp

Index: Source/core/rendering/style/RenderStyle.cpp
diff --git a/Source/core/rendering/style/RenderStyle.cpp b/Source/core/rendering/style/RenderStyle.cpp
index 498ed861ae6a8d1b1a85aecc4f9769091c2bb506..ba1ca725ff1907123205c444cb5f023d5a74d330 100644
--- a/Source/core/rendering/style/RenderStyle.cpp
+++ b/Source/core/rendering/style/RenderStyle.cpp
@@ -1587,18 +1587,18 @@ void RenderStyle::setBorderImageSlices(LengthBox slices)
     surround.access()->border.m_image.setImageSlices(slices);
 }
 
-void RenderStyle::setBorderImageWidth(LengthBox slices)
+void RenderStyle::setBorderImageWidth(const BorderImageLengthBox& slices)
 {
-    if (surround->border.m_image.borderSlices().deprecatedLengthBox() == slices)
+    if (surround->border.m_image.borderSlices() == slices)
         return;
-    surround.access()->border.m_image.setBorderSlices(BorderImageLengthBox(slices));
+    surround.access()->border.m_image.setBorderSlices(slices);
 }
 
-void RenderStyle::setBorderImageOutset(LengthBox outset)
+void RenderStyle::setBorderImageOutset(const BorderImageLengthBox& outset)
 {
-    if (surround->border.m_image.outset().deprecatedLengthBox() == outset)
+    if (surround->border.m_image.outset() == outset)
         return;
-    surround.access()->border.m_image.setOutset(BorderImageLengthBox(outset));
+    surround.access()->border.m_image.setOutset(outset);
 }
 
 ShapeValue* RenderStyle::initialShapeInside()