Move cc::DisplayItemList and related classes into cc/paint/

cc/playback/skip_image_canvas.cc

-// Copyright 2016 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/playback/skip_image_canvas.h"
-
-#include "third_party/skia/include/core/SkShader.h"
-
-namespace cc {
-
-SkipImageCanvas::SkipImageCanvas(SkCanvas* canvas)
-    : SkPaintFilterCanvas(canvas) {}
-
-bool SkipImageCanvas::onFilter(SkTCopyOnFirstWrite<SkPaint>* paint,
-                               Type type) const {
-  if (type == kBitmap_Type)
-    return false;
-
-  SkShader* shader = (*paint) ? (*paint)->getShader() : nullptr;
-  return !shader || !shader->isAImage();
-}
-
-void SkipImageCanvas::onDrawPicture(const SkPicture* picture,
-                                    const SkMatrix* matrix,
-                                    const SkPaint* paint) {
-  SkTCopyOnFirstWrite<SkPaint> filteredPaint(paint);
-
-  // To filter nested draws, we must unfurl pictures at this stage.
-  if (onFilter(&filteredPaint, kPicture_Type))
-    SkCanvas::onDrawPicture(picture, matrix, filteredPaint);
-}
-
-}  // namespace cc