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

cc/trees/layer_tree_host_common.h

 // Copyright 2011 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_TREES_LAYER_TREE_HOST_COMMON_H_
 #define CC_TREES_LAYER_TREE_HOST_COMMON_H_
 
 #include <stddef.h>
 
 #include <limits>
@@ skipping 166 matching lines @@
 };
 
 struct CC_EXPORT ScrollAndScaleSet {
   ScrollAndScaleSet();
   ~ScrollAndScaleSet();
 
   std::vector<LayerTreeHostCommon::ScrollUpdateInfo> scrolls;
   float page_scale_delta;
   gfx::Vector2dF elastic_overscroll_delta;
   float top_controls_delta;
-  std::vector<scoped_ptr<SwapPromise>> swap_promises;
+  std::vector<std::unique_ptr<SwapPromise>> swap_promises;
 
   bool EqualsForTesting(const ScrollAndScaleSet& other) const;
   void ToProtobuf(proto::ScrollAndScaleSet* proto) const;
   void FromProtobuf(const proto::ScrollAndScaleSet& proto);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScrollAndScaleSet);
 };
 
 template <typename LayerType>
@@ skipping 60 matching lines @@
   for (auto* layer : *host_impl)
     CallFunctionForLayer(layer, function, type);
 }
 
 CC_EXPORT PropertyTrees* GetPropertyTrees(Layer* layer);
 CC_EXPORT PropertyTrees* GetPropertyTrees(LayerImpl* layer);
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_COMMON_H_