Back PaintRecord with PaintOpBuffer instead of SkPicture

cc/paint/paint_record.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/paint/paint_record.h"
+
+#include "cc/paint/paint_op_buffer.h"
+#include "third_party/skia/include/core/SkPictureRecorder.h"
+
+namespace cc {
+
+sk_sp<SkPicture> ToSkPicture(sk_sp<PaintRecord> record) {
+  SkPictureRecorder recorder;
+  SkCanvas* canvas = recorder.beginRecording(record->cullRect());
+  record->playback(canvas);
+  return recorder.finishRecordingAsPicture();
+}
+
+sk_sp<const SkPicture> ToSkPicture(sk_sp<const PaintRecord> record) {
+  SkPictureRecorder recorder;
+  SkCanvas* canvas = recorder.beginRecording(record->cullRect());
+  record->playback(canvas);
+  return recorder.finishRecordingAsPicture();
+}
+
+}  // namespace cc