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

cc/base/list_container_helper.h

 // Copyright 2015 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_BASE_LIST_CONTAINER_HELPER_H_
 #define CC_BASE_LIST_CONTAINER_HELPER_H_
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 
 namespace cc {
 
 // Helper class for ListContainer non-templated logic. All methods are private,
 // and only exposed to friend classes.
 // For usage, see comments in ListContainer (list_container.h).
 class CC_EXPORT ListContainerHelper final {
  private:
   template <typename T>
@@ skipping 142 matching lines @@
 
   // Unlike the ListContainer method, this one does not invoke element
   // destructors.
   void clear();
 
   size_t AvailableSizeWithoutAnotherAllocationForTesting() const;
 
   // Hands out memory location for an element at the end of data structure.
   void* Allocate(size_t size_of_actual_element_in_bytes);
 
-  scoped_ptr<CharAllocator> data_;
+  std::unique_ptr<CharAllocator> data_;
 
   DISALLOW_COPY_AND_ASSIGN(ListContainerHelper);
 };
 
 }  // namespace cc
 
 #endif  // CC_BASE_LIST_CONTAINER_HELPER_H_