Blink-side contiguous allocation of display items.

Source/platform/graphics/paint/SubtreeDisplayItem.cpp

 // Copyright 2015 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 "platform/graphics/paint/SubtreeDisplayItem.h"
 
-// Intentionally empty. Required when the create() functions are not inlined.
+#include "platform/graphics/paint/DisplayItems.h"
+
+namespace blink {
+
+void SubtreeCachedDisplayItem::appendByMoving(DisplayItems& destination)
+{
+    destination.emplaceBack<SubtreeCachedDisplayItem>(
+        DisplayItemClientWrapperHelper(*this), type());
+}
+
+void BeginSubtreeDisplayItem::appendByMoving(DisplayItems& destination)
+{
+    destination.emplaceBack<BeginSubtreeDisplayItem>(
+        DisplayItemClientWrapperHelper(*this), type());
+}
+
+void EndSubtreeDisplayItem::appendByMoving(DisplayItems& destination)
+{
+    destination.emplaceBack<EndSubtreeDisplayItem>(
+        DisplayItemClientWrapperHelper(*this), type());
+}
+
+} // namespace blink