cc: Use a ListContainer for DisplayItemList to reduce allocations.

cc/layers/picture_image_layer.cc

 // Copyright 2010 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 "cc/layers/picture_image_layer.h"
 
 #include "cc/layers/picture_image_layer_impl.h"
 #include "cc/resources/drawing_display_item.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
@@ skipping 55 matching lines @@
 void PictureImageLayer::PaintContentsToDisplayList(
     DisplayItemList* display_list,
     const gfx::Rect& clip,
     ContentLayerClient::PaintingControlSetting painting_control) {
   SkPictureRecorder recorder;
   SkCanvas* canvas = recorder.beginRecording(gfx::RectToSkRect(clip));
   PaintContents(canvas, clip, painting_control);
 
   skia::RefPtr<SkPicture> picture =
       skia::AdoptRef(recorder.endRecordingAsPicture());
-  display_list->AppendItem(DrawingDisplayItem::Create(picture));
+  auto* item = display_list->CreateAndAppendItem<DrawingDisplayItem>();
+  item->SetNew(picture.Pass());
 }
 
 bool PictureImageLayer::FillsBoundsCompletely() const {
   return false;
 }
 
 }  // namespace cc