WIP for display item list backed by ListContainer

Source/core/paint/SVGClipPainter.cpp

Index: Source/core/paint/SVGClipPainter.cpp
diff --git a/Source/core/paint/SVGClipPainter.cpp b/Source/core/paint/SVGClipPainter.cpp
index ec19fd9440a1561f7cd87c014135d1c18391dd2b..01c0de4125eace368d04eb0d1317f813b1e77a08 100644
--- a/Source/core/paint/SVGClipPainter.cpp
+++ b/Source/core/paint/SVGClipPainter.cpp
@@ -100,17 +100,17 @@ void SVGClipPainter::postApplyStatefulResource(const LayoutObject& target, Graph
     switch (clipperState) {
     case ClipperAppliedPath:
         // Path-only clipping, no layers to restore but we need to emit an end to the clip path display item.
-        if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-            if (!context->displayItemList()->displayItemConstructionIsDisabled()) {
-                if (context->displayItemList()->lastDisplayItemIsNoopBegin())
-                    context->displayItemList()->removeLastDisplayItem();
-                else
-                    context->displayItemList()->add(EndClipPathDisplayItem::create(target));
-            }
-        } else {
-            EndClipPathDisplayItem endClipPathDisplayItem(target);
-            endClipPathDisplayItem.replay(*context);
-        }
+        //if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
+        //    if (!context->displayItemList()->displayItemConstructionIsDisabled()) {
+        //        if (context->displayItemList()->lastDisplayItemIsNoopBegin())
+        //            context->displayItemList()->removeLastDisplayItem();
+        //        else
+        //            context->displayItemList()->add(EndClipPathDisplayItem::create(target));
+        //    }
+        //} else {
+        //    EndClipPathDisplayItem endClipPathDisplayItem(target);
+        //    endClipPathDisplayItem.replay(*context);
+        //}
         break;
     case ClipperAppliedMask:
         // Transfer content -> clip mask (SrcIn)