Blink-side contiguous allocation of display items.

Source/platform/graphics/paint/ClipPathRecorder.cpp

Index: Source/platform/graphics/paint/ClipPathRecorder.cpp
diff --git a/Source/platform/graphics/paint/ClipPathRecorder.cpp b/Source/platform/graphics/paint/ClipPathRecorder.cpp
index 65ac303a8992c0e21587aa8fee50bbfcdef1f0c5..25fa2878a3a796a79f6459200feea2cbcb86d9b3 100644
--- a/Source/platform/graphics/paint/ClipPathRecorder.cpp
+++ b/Source/platform/graphics/paint/ClipPathRecorder.cpp
@@ -20,7 +20,7 @@ ClipPathRecorder::ClipPathRecorder(GraphicsContext& context, const DisplayItemCl
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(BeginClipPathDisplayItem::create(m_client, clipPath));
+        m_context.displayItemList()->createAndAppendIfNeeded<BeginClipPathDisplayItem>(m_client, clipPath);
     } else {
         BeginClipPathDisplayItem clipPathDisplayItem(m_client, clipPath);
         clipPathDisplayItem.replay(m_context);
@@ -33,7 +33,7 @@ ClipPathRecorder::~ClipPathRecorder()
         ASSERT(m_context.displayItemList());
         if (m_context.displayItemList()->displayItemConstructionIsDisabled())
             return;
-        m_context.displayItemList()->add(EndClipPathDisplayItem::create(m_client));
+        m_context.displayItemList()->createAndAppendIfNeeded<EndClipPathDisplayItem>(m_client);
     } else {
         EndClipPathDisplayItem endClipPathDisplayItem(m_client);
         endClipPathDisplayItem.replay(m_context);