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

cc/trees/damage_tracker.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_DAMAGE_TRACKER_H_
 #define CC_TREES_DAMAGE_TRACKER_H_
 
+#include <memory>
 #include <vector>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_collections.h"
 #include "ui/gfx/geometry/rect.h"
 
 class SkImageFilter;
 
 namespace gfx {
 class Rect;
 }
 
 namespace cc {
 
 class FilterOperations;
 class LayerImpl;
 class RenderSurfaceImpl;
 
 // Computes the region where pixels have actually changed on a
 // RenderSurfaceImpl. This region is used to scissor what is actually drawn to
 // the screen to save GPU computation and bandwidth.
 class CC_EXPORT DamageTracker {
  public:
-  static scoped_ptr<DamageTracker> Create();
+  static std::unique_ptr<DamageTracker> Create();
   ~DamageTracker();
 
   void DidDrawDamagedArea() { current_damage_rect_ = gfx::Rect(); }
   void AddDamageNextUpdate(const gfx::Rect& dmg) {
     current_damage_rect_.Union(dmg);
   }
   void UpdateDamageTrackingState(
       const LayerImplList& layer_list,
       int target_surface_layer_id,
       bool target_surface_property_changed_only_from_descendant,
@@ skipping 42 matching lines @@
 
   unsigned int mailboxId_;
   gfx::Rect current_damage_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(DamageTracker);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_DAMAGE_TRACKER_H_