WIP for display item list backed by ListContainer

Source/core/paint/FilterPainter.cpp

Index: Source/core/paint/FilterPainter.cpp
diff --git a/Source/core/paint/FilterPainter.cpp b/Source/core/paint/FilterPainter.cpp
index 19116baab9659e819290455abc7f7c601279de76..d2580b6d9e42b738309b5a8a0275259d23aeb388 100644
--- a/Source/core/paint/FilterPainter.cpp
+++ b/Source/core/paint/FilterPainter.cpp
@@ -57,21 +57,22 @@ FilterPainter::FilterPainter(DeprecatedPaintLayer& layer, GraphicsContext* conte
     }
 
     ASSERT(m_layoutObject);
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-        ASSERT(context->displayItemList());
-        if (!context->displayItemList()->displayItemConstructionIsDisabled()) {
-            FilterOperations filterOperations(layer.computeFilterOperations(m_layoutObject->styleRef()));
-            OwnPtr<WebFilterOperations> webFilterOperations = adoptPtr(Platform::current()->compositorSupport()->createFilterOperations());
-            builder.buildFilterOperations(filterOperations, webFilterOperations.get());
-            OwnPtr<BeginFilterDisplayItem> filterDisplayItem = BeginFilterDisplayItem::create(*m_layoutObject, imageFilter, rootRelativeBounds, webFilterOperations.release());
-
-            context->displayItemList()->add(filterDisplayItem.release());
-        }
-    } else {
-        OwnPtr<BeginFilterDisplayItem> filterDisplayItem = BeginFilterDisplayItem::create(*m_layoutObject, imageFilter, rootRelativeBounds);
-
-        filterDisplayItem->replay(*context);
-    }
+    ASSERT(m_context);
+    //if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
+    //    ASSERT(context->displayItemList());
+    //    if (!context->displayItemList()->displayItemConstructionIsDisabled()) {
+    //        FilterOperations filterOperations(layer.computeFilterOperations(m_layoutObject->styleRef()));
+    //        OwnPtr<WebFilterOperations> webFilterOperations = adoptPtr(Platform::current()->compositorSupport()->createFilterOperations());
+    //        builder.buildFilterOperations(filterOperations, webFilterOperations.get());
+    //        OwnPtr<BeginFilterDisplayItem> filterDisplayItem = BeginFilterDisplayItem::create(*m_layoutObject, imageFilter, rootRelativeBounds, webFilterOperations.release());
+
+    //        context->displayItemList()->add(filterDisplayItem.release());
+    //    }
+    //} else {
+    //    OwnPtr<BeginFilterDisplayItem> filterDisplayItem = BeginFilterDisplayItem::create(*m_layoutObject, imageFilter, rootRelativeBounds);
+
+    //    filterDisplayItem->replay(*context);
+    //}
 
     m_filterInProgress = true;
 }
@@ -81,18 +82,18 @@ FilterPainter::~FilterPainter()
     if (!m_filterInProgress)
         return;
 
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-        ASSERT(m_context->displayItemList());
-        if (!m_context->displayItemList()->displayItemConstructionIsDisabled()) {
-            if (m_context->displayItemList()->lastDisplayItemIsNoopBegin())
-                m_context->displayItemList()->removeLastDisplayItem();
-            else
-                m_context->displayItemList()->add(EndFilterDisplayItem::create(*m_layoutObject));
-        }
-    } else {
-        OwnPtr<EndFilterDisplayItem> endFilterDisplayItem = EndFilterDisplayItem::create(*m_layoutObject);
-        endFilterDisplayItem->replay(*m_context);
-    }
+    //if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
+    //    ASSERT(m_context->displayItemList());
+    //    if (!m_context->displayItemList()->displayItemConstructionIsDisabled()) {
+    //        if (m_context->displayItemList()->lastDisplayItemIsNoopBegin())
+    //            m_context->displayItemList()->removeLastDisplayItem();
+    //        else
+    //            m_context->displayItemList()->add(EndFilterDisplayItem::create(*m_layoutObject));
+    //    }
+    //} else {
+    //    OwnPtr<EndFilterDisplayItem> endFilterDisplayItem = EndFilterDisplayItem::create(*m_layoutObject);
+    //    endFilterDisplayItem->replay(*m_context);
+    //}
 }
 
 } // namespace blink