namespace Internal
{
-bool LayoutItem::Impl::sUseZeroUnspecifiedMeasureSpec = false;
+class LayoutData;
+bool LayoutItem::Impl::sUseZeroUnspecifiedMeasureSpec = false;
+LayoutData* LayoutItem::Impl::sLayoutData = nullptr;
LayoutItem::Impl::Impl()
-: mOwner( nullptr ),
+: mOwner(),
mLayoutParent( nullptr ),
mOldWidthMeasureSpec( 0 ),
mOldHeightMeasureSpec( 0 ),