Revert of Back PaintRecord with PaintOpBuffer instead of SkPicture

cc/test/test_skcanvas.cc

-// Copyright 2017 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/test/test_skcanvas.h"
-
-namespace cc {
-
-SaveCountingCanvas::SaveCountingCanvas() : SkNoDrawCanvas(100, 100) {}
-
-SkCanvas::SaveLayerStrategy SaveCountingCanvas::getSaveLayerStrategy(
-    const SaveLayerRec& rec) {
-  save_count_++;
-  return SkNoDrawCanvas::getSaveLayerStrategy(rec);
-}
-
-void SaveCountingCanvas::willRestore() {
-  restore_count_++;
-}
-
-void SaveCountingCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) {
-  draw_rect_ = rect;
-  paint_ = paint;
-}
-
-}  // namespace cc