Blink-side contiguous allocation of display items.

Source/core/paint/FloatClipRecorder.cpp

 // Copyright 2014 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/FloatClipRecorder.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 #include "platform/graphics/paint/FloatClipDisplayItem.h"
 
 namespace blink {
 
 FloatClipRecorder::FloatClipRecorder(GraphicsContext& context, const DisplayItemClientWrapper& client, PaintPhase paintPhase, const FloatRect& clipRect)
     : m_context(context)
     , m_client(client)
     , m_clipType(DisplayItem::paintPhaseToFloatClipType(paintPhase))
 {
     if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(FloatClipDisplayItem::create(m_client, m_clipType, clipRect));
+        m_context.displayItemList()->createAndAppendIfNeeded<FloatClipDisplayItem>(m_client, m_clipType, clipRect);
     } else {
         FloatClipDisplayItem clipDisplayItem(m_client, m_clipType, clipRect);
         clipDisplayItem.replay(m_context);
     }
 }
 
 FloatClipRecorder::~FloatClipRecorder()
 {
     DisplayItem::Type endType = DisplayItem::floatClipTypeToEndFloatClipType(m_clipType);
     if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(EndFloatClipDisplayItem::create(m_client, endType));
+        m_context.displayItemList()->createAndAppendIfNeeded<EndFloatClipDisplayItem>(m_client, endType);
     } else {
         EndFloatClipDisplayItem endClipDisplayItem(m_client, endType);
         endClipDisplayItem.replay(m_context);
     }
 }
 
 } // namespace blink