Back PaintRecord with PaintOpBuffer instead of SkPicture

cc/test/test_skcanvas.h

+// 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.
+
+#ifndef CC_TEST_TEST_SKCANVAS_H_
+#define CC_TEST_TEST_SKCANVAS_H_
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "third_party/skia/include/utils/SkNoDrawCanvas.h"
+
+namespace cc {
+
+class SaveCountingCanvas : public SkNoDrawCanvas {
+ public:
+  SaveCountingCanvas();
+
+  // Note: getSaveLayerStrategy is used as "willSave", as willSave
+  // is not always called.
+  SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec& rec) override;
+  void willRestore() override;
+  void onDrawRect(const SkRect& rect, const SkPaint& paint) override;
+
+  int save_count_ = 0;
+  int restore_count_ = 0;
+  SkRect draw_rect_;
+  SkPaint paint_;
+};
+
+}  // namespace cc
+
+#endif  // CC_TEST_TEST_SKCANVAS_H_