Blink-side contiguous allocation of display items.

Source/core/paint/Transform3DRecorder.cpp

Index: Source/core/paint/Transform3DRecorder.cpp
diff --git a/Source/core/paint/Transform3DRecorder.cpp b/Source/core/paint/Transform3DRecorder.cpp
index be8b29e39adbd0ad8bf6b656f75bd5cda1d3833c..b1bb961e506aef4e07fe43d0dab04363d2b0ff76 100644
--- a/Source/core/paint/Transform3DRecorder.cpp
+++ b/Source/core/paint/Transform3DRecorder.cpp
@@ -27,7 +27,7 @@ Transform3DRecorder::Transform3DRecorder(GraphicsContext& context, const Display
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(BeginTransform3DDisplayItem::create(m_client, m_type, transform));
+        m_context.displayItemList()->createAndAppendIfNeeded<BeginTransform3DDisplayItem>(m_client, m_type, transform);
     } else {
         BeginTransform3DDisplayItem beginTransform(m_client, m_type, transform);
         beginTransform.replay(m_context);
@@ -44,7 +44,7 @@ Transform3DRecorder::~Transform3DRecorder()
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(EndTransform3DDisplayItem::create(m_client, endType));
+        m_context.displayItemList()->createAndAppendIfNeeded<EndTransform3DDisplayItem>(m_client, endType);
     } else {
         EndTransform3DDisplayItem endTransform(m_client, endType);
         endTransform.replay(m_context);