Back PaintRecord with PaintOpBuffer instead of SkPicture

cc/paint/skia_paint_canvas.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/skia_paint_canvas.h"
 
 #include "base/memory/ptr_util.h"
 #include "cc/paint/display_item_list.h"
 #include "cc/paint/paint_recorder.h"
 #include "third_party/skia/include/core/SkAnnotation.h"
@@ skipping 27 matching lines @@
 }
 
 int SkiaPaintCanvas::save() {
   return canvas_->save();
 }
 
 int SkiaPaintCanvas::saveLayer(const SkRect* bounds, const PaintFlags* flags) {
   return canvas_->saveLayer(bounds, ToSkPaint(flags));
 }
 
-int SkiaPaintCanvas::saveLayerAlpha(const SkRect* bounds, U8CPU alpha) {
+int SkiaPaintCanvas::saveLayerAlpha(const SkRect* bounds, uint8_t alpha) {
   return canvas_->saveLayerAlpha(bounds, alpha);
 }
 
 void SkiaPaintCanvas::restore() {
   canvas_->restore();
 }
 
 int SkiaPaintCanvas::getSaveCount() const {
   return canvas_->getSaveCount();
 }
@@ skipping 211 matching lines @@
       break;
     case AnnotationType::NAMED_DESTINATION: {
       SkPoint point = SkPoint::Make(rect.x(), rect.y());
       SkAnnotateNamedDestination(canvas_, point, data.get());
       break;
     }
   }
 }
 
 }  // namespace cc