Convert //cc from scoped_ptr to std::unique_ptr.

cc/layers/picture_image_layer_impl.cc

 // Copyright 2013 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/picture_image_layer_impl.h"
 
 #include <algorithm>
 
 #include "cc/debug/debug_colors.h"
 #include "cc/trees/layer_tree_impl.h"
 
 namespace cc {
 
 PictureImageLayerImpl::PictureImageLayerImpl(LayerTreeImpl* tree_impl,
                                              int id,
                                              bool is_mask)
     : PictureLayerImpl(tree_impl, id, is_mask) {}
 
 PictureImageLayerImpl::~PictureImageLayerImpl() {
 }
 
 const char* PictureImageLayerImpl::LayerTypeAsString() const {
   return "cc::PictureImageLayerImpl";
 }
 
-scoped_ptr<LayerImpl> PictureImageLayerImpl::CreateLayerImpl(
+std::unique_ptr<LayerImpl> PictureImageLayerImpl::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
   return PictureImageLayerImpl::Create(tree_impl, id(), is_mask_);
 }
 
 void PictureImageLayerImpl::GetDebugBorderProperties(
     SkColor* color, float* width) const {
   *color = DebugColors::ImageLayerBorderColor();
   *width = DebugColors::ImageLayerBorderWidth(layer_tree_impl());
 }
 
@@ skipping 13 matching lines @@
 }
 
 void PictureImageLayerImpl::UpdateIdealScales() {
   ideal_contents_scale_ = 1.f;
   ideal_page_scale_ = 1.f;
   ideal_device_scale_ = 1.f;
   ideal_source_scale_ = 1.f;
 }
 
 }  // namespace cc