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

cc/resources/memory_history.cc

 // Copyright 2012 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/resources/memory_history.h"
 
 #include <limits>
 
+#include "base/memory/ptr_util.h"
+
 namespace cc {
 
 // static
-scoped_ptr<MemoryHistory> MemoryHistory::Create() {
-  return make_scoped_ptr(new MemoryHistory());
+std::unique_ptr<MemoryHistory> MemoryHistory::Create() {
+  return base::WrapUnique(new MemoryHistory());
 }
 
 MemoryHistory::MemoryHistory() {}
 
 void MemoryHistory::SaveEntry(const MemoryHistory::Entry& entry) {
   ring_buffer_.SaveToBuffer(entry);
 }
 
 }  // namespace cc