Moved leadingpaddingnandborder function as a method on YGNode

Summary: Moved leadingpaddingnandborder function as a method on YGNode

Reviewed By: emilsjolander

Differential Revision: D6711991

fbshipit-source-id: 41ad7191bf8df6fe3131106436dc0c87e9dee297

yoga/YGNode.cpp

@@ -660,3 +660,9 @@ float YGNode::getTrailingPadding(
           widthSize),
       0.0f);
 }
+
+float YGNode::getLeadingPaddingAndBorder(
+    const YGFlexDirection axis,
+    const float widthSize) {
+  return getLeadingPadding(axis, widthSize) + getLeadingBorder(axis);
+}