Blink-side contiguous allocation of display items.

Source/core/paint/FloatClipRecorder.cpp

Index: Source/core/paint/FloatClipRecorder.cpp
diff --git a/Source/core/paint/FloatClipRecorder.cpp b/Source/core/paint/FloatClipRecorder.cpp
index 8797c065c2010645b3bf154ea8cc24d13bdd432e..9293e64d77a3d170a4833f493e88eef420d3683a 100644
--- a/Source/core/paint/FloatClipRecorder.cpp
+++ b/Source/core/paint/FloatClipRecorder.cpp
@@ -21,7 +21,7 @@ FloatClipRecorder::FloatClipRecorder(GraphicsContext& context, const DisplayItem
         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);
@@ -35,7 +35,7 @@ FloatClipRecorder::~FloatClipRecorder()
         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);