WIP for display item list backed by ListContainer

Source/core/paint/SVGClipPainter.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/paint/SVGClipPainter.h"
 
 #include "core/dom/ElementTraversal.h"
 #include "core/layout/svg/LayoutSVGResourceClipper.h"
 #include "core/layout/svg/SVGResources.h"
@@ skipping 82 matching lines @@
     CompositingRecorder::beginCompositing(*context, target, SkXfermode::kSrcIn_Mode, 1, &paintInvalidationRect);
 
     return true;
 }
 
 void SVGClipPainter::postApplyStatefulResource(const LayoutObject& target, GraphicsContext* context, ClipperState& clipperState)
 {
     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)
         CompositingRecorder::endCompositing(*context, target);
 
         // Transfer clip mask -> bg (SrcOver)
         CompositingRecorder::endCompositing(*context, target);
         break;
     default:
         ASSERT_NOT_REACHED();
@@ skipping 11 matching lines @@
     if (drawingRecorder.canUseCachedDrawing())
         return;
 
     context->save();
     context->concatCTM(contentTransformation);
     context->drawPicture(clipContentPicture.get());
     context->restore();
 }
 
 }