Blink-side contiguous allocation of display items.

Source/platform/graphics/paint/ClipPathDisplayItem.h

Index: Source/platform/graphics/paint/ClipPathDisplayItem.h
diff --git a/Source/platform/graphics/paint/ClipPathDisplayItem.h b/Source/platform/graphics/paint/ClipPathDisplayItem.h
index 23238873bad2711d33a550c99e3b3c282511c4d5..39a094818c68ba965a86953c1994ebadc38902c2 100644
--- a/Source/platform/graphics/paint/ClipPathDisplayItem.h
+++ b/Source/platform/graphics/paint/ClipPathDisplayItem.h
@@ -14,19 +14,16 @@
 namespace blink {
 
 class PLATFORM_EXPORT BeginClipPathDisplayItem : public PairedBeginDisplayItem {
-    WTF_MAKE_FAST_ALLOCATED(BeginClipPathDisplayItem);
 public:
-    static PassOwnPtr<BeginClipPathDisplayItem> create(const DisplayItemClientWrapper& client, const Path& clipPath)
-    {
-        return adoptPtr(new BeginClipPathDisplayItem(client, clipPath));
-    }
-
-    BeginClipPathDisplayItem(const DisplayItemClientWrapper& client, const Path& clipPath)
+    BeginClipPathDisplayItem(const DisplayItemClientWrapper& client, const SkPath& clipPath)
         : PairedBeginDisplayItem(client, BeginClipPath)
-        , m_clipPath(clipPath.skPath()) { }
+        , m_clipPath(clipPath) { }
+    BeginClipPathDisplayItem(const DisplayItemClientWrapper& client, const Path& clipPath)
+        : BeginClipPathDisplayItem(client, clipPath.skPath()) { }
 
     virtual void replay(GraphicsContext&) override;
     virtual void appendToWebDisplayItemList(WebDisplayItemList*) const override;
+    void appendByMoving(DisplayItems&) override;
 
 private:
     const SkPath m_clipPath;
@@ -36,18 +33,13 @@ private:
 };
 
 class PLATFORM_EXPORT EndClipPathDisplayItem : public PairedEndDisplayItem {
-    WTF_MAKE_FAST_ALLOCATED(EndClipPathDisplayItem);
 public:
-    static PassOwnPtr<EndClipPathDisplayItem> create(const DisplayItemClientWrapper& client)
-    {
-        return adoptPtr(new EndClipPathDisplayItem(client));
-    }
-
     EndClipPathDisplayItem(const DisplayItemClientWrapper& client)
         : PairedEndDisplayItem(client, EndClipPath) { }
 
     virtual void replay(GraphicsContext&) override;
     virtual void appendToWebDisplayItemList(WebDisplayItemList*) const override;
+    void appendByMoving(DisplayItems&) override;
 
 private:
 #if ENABLE(ASSERT)