Use sk_sp-based picture recording APIs

cc/layers/layer.cc

 // Copyright 2010 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/layers/layer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 218 matching lines @@
 bool Layer::IsPropertyChangeAllowed() const {
   if (!layer_tree_host_)
     return true;
 
   if (!layer_tree_host_->settings().strict_layer_property_change_checking)
     return true;
 
   return !layer_tree_host_->in_paint_layer_contents();
 }
 
-skia::RefPtr<SkPicture> Layer::GetPicture() const {
-  return skia::RefPtr<SkPicture>();
+sk_sp<SkPicture> Layer::GetPicture() const {
+  return nullptr;
 }
 
 void Layer::SetParent(Layer* layer) {
   DCHECK(!layer || !layer->HasAncestor(this));
 
   if (parent_should_know_need_push_properties()) {
     if (parent_)
       parent_->RemoveDependentNeedsPushProperties();
     if (layer)
       layer->AddDependentNeedsPushProperties();
@@ skipping 1674 matching lines @@
       this, layer_tree_host_->property_trees()->transform_tree);
 }
 
 gfx::Transform Layer::screen_space_transform() const {
   DCHECK_NE(transform_tree_index_, -1);
   return draw_property_utils::ScreenSpaceTransform(
       this, layer_tree_host_->property_trees()->transform_tree);
 }
 
 }  // namespace cc