Back PaintRecord with PaintOpBuffer instead of SkPicture

cc/test/test_skcanvas.cc

Index: cc/test/test_skcanvas.cc
diff --git a/cc/test/test_skcanvas.cc b/cc/test/test_skcanvas.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e45f42de45b109888f2f2c959d9546f58a462414
--- /dev/null
+++ b/cc/test/test_skcanvas.cc
@@ -0,0 +1,26 @@
+// 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