Blink-side contiguous allocation of display items.

Source/platform/graphics/paint/ClipRecorder.cpp

Index: Source/platform/graphics/paint/ClipRecorder.cpp
diff --git a/Source/platform/graphics/paint/ClipRecorder.cpp b/Source/platform/graphics/paint/ClipRecorder.cpp
index 32803581cf4ddde650911d04912d4b4089e3f510..faf1e04fc1c363dcc0268e6c8a4e9daefff45ebb 100644
--- a/Source/platform/graphics/paint/ClipRecorder.cpp
+++ b/Source/platform/graphics/paint/ClipRecorder.cpp
@@ -21,7 +21,7 @@ ClipRecorder::ClipRecorder(GraphicsContext& context, const DisplayItemClientWrap
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(ClipDisplayItem::create(m_client, type, pixelSnappedIntRect(clipRect)));
+        m_context.displayItemList()->createAndAppend<ClipDisplayItem>(m_client, type, pixelSnappedIntRect(clipRect));
     } else {
         ClipDisplayItem clipDisplayItem(m_client, type, pixelSnappedIntRect(clipRect));
         clipDisplayItem.replay(m_context);
@@ -30,17 +30,16 @@ ClipRecorder::ClipRecorder(GraphicsContext& context, const DisplayItemClientWrap
 
 ClipRecorder::~ClipRecorder()
 {
-    DisplayItem::Type endType = DisplayItem::clipTypeToEndClipType(m_type);
     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(EndClipDisplayItem::create(m_client, endType));
+                m_context.displayItemList()->createAndAppend<EndClipDisplayItem>(m_client, DisplayItem::clipTypeToEndClipType(m_type));
         }
     } else {
-        EndClipDisplayItem endClipDisplayItem(m_client, endType);
+        EndClipDisplayItem endClipDisplayItem(m_client, DisplayItem::clipTypeToEndClipType(m_type));
         endClipDisplayItem.replay(m_context);
     }
 }