WIP for display item list backed by ListContainer

Source/platform/graphics/paint/DrawingRecorder.cpp

Index: Source/platform/graphics/paint/DrawingRecorder.cpp
diff --git a/Source/platform/graphics/paint/DrawingRecorder.cpp b/Source/platform/graphics/paint/DrawingRecorder.cpp
index c697e0b531344892b760bb0fd1407bbd410f18af..e6d1b32d06659b4f5d91f0ad84a111b86fb16cf9 100644
--- a/Source/platform/graphics/paint/DrawingRecorder.cpp
+++ b/Source/platform/graphics/paint/DrawingRecorder.cpp
@@ -91,16 +91,17 @@ DrawingRecorder::~DrawingRecorder()
                 m_displayItemClient.debugName().utf8().data());
         }
 #endif
-        m_context.displayItemList()->add(CachedDisplayItem::create(m_displayItemClient, DisplayItem::drawingTypeToCachedType(m_displayItemType)));
+        //m_context.displayItemList()->add(CachedDisplayItem::create(m_displayItemClient, DisplayItem::drawingTypeToCachedType(m_displayItemType)));
     } else {
-        OwnPtr<DrawingDisplayItem> drawingDisplayItem = DrawingDisplayItem::create(m_displayItemClient
-            , m_displayItemType
-            , m_context.endRecording()
-#if ENABLE(ASSERT)
-            , m_underInvalidationCheckingMode
-#endif
-            );
-        m_context.displayItemList()->add(drawingDisplayItem.release());
+        ALLOW_UNUSED_LOCAL(m_displayItemType);
+//        OwnPtr<DrawingDisplayItem> drawingDisplayItem = DrawingDisplayItem::create(m_displayItemClient
+//            , m_displayItemType
+//            , m_context.endRecording()
+//#if ENABLE(ASSERT)
+//            , m_underInvalidationCheckingMode
+//#endif
+//            );
+//        m_context.displayItemList()->add(drawingDisplayItem.release());
     }
 }