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

cc/layers/painted_scrollbar_layer_impl.h

 // 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.
 
 #ifndef CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
 #define CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
 
 #include "base/macros.h"
 #include "cc/base/cc_export.h"
 #include "cc/input/scrollbar.h"
 #include "cc/layers/scrollbar_layer_impl_base.h"
 #include "cc/resources/ui_resource_client.h"
 
 namespace cc {
 
 class LayerTreeImpl;
 class ScrollView;
 
 class CC_EXPORT PaintedScrollbarLayerImpl : public ScrollbarLayerImplBase {
  public:
-  static scoped_ptr<PaintedScrollbarLayerImpl> Create(
-      LayerTreeImpl* tree_impl,
-      int id,
-      ScrollbarOrientation orientation);
+  static std::unique_ptr<PaintedScrollbarLayerImpl>
+  Create(LayerTreeImpl* tree_impl, int id, ScrollbarOrientation orientation);
   ~PaintedScrollbarLayerImpl() override;
 
   // LayerImpl implementation.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
+  std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   void PushPropertiesTo(LayerImpl* layer) override;
 
   bool WillDraw(DrawMode draw_mode,
                 ResourceProvider* resource_provider) override;
   void AppendQuads(RenderPass* render_pass,
                    AppendQuadsData* append_quads_data) override;
   gfx::Rect GetEnclosingRectInTargetSpace() const override;
 
   void SetThumbThickness(int thumb_thickness);
   void SetThumbLength(int thumb_length);
@@ skipping 41 matching lines @@
   int thumb_thickness_;
   int thumb_length_;
   int track_start_;
   int track_length_;
 
   DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayerImpl);
 };
 
 }  // namespace cc
 #endif  // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_