Convert //sync from scoped_ptr to std::unique_ptr

sync/syncable/syncable_id.h

 // 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.
 
 #ifndef SYNC_SYNCABLE_SYNCABLE_ID_H_
 #define SYNC_SYNCABLE_SYNCABLE_ID_H_
 
 #include <iosfwd>
 #include <limits>
+#include <memory>
 #include <sstream>
 #include <string>
 
 #include "base/containers/hash_tables.h"
-#include "base/memory/scoped_ptr.h"
 #include "sync/base/sync_export.h"
 
 namespace base {
 class StringValue;
 }
 
 namespace sql {
 class Statement;
 }
 
@@ skipping 74 matching lines @@
 
   // This method returns an ID that will compare less than any valid ID.
   // The returned ID is not a valid ID itself.  This is useful for
   // computing lower bounds on std::sets that are ordered by operator<.
   static Id GetLeastIdForLexicographicComparison();
 
   // Gets root ID.
   static Id GetRoot();
 
  private:
-  friend scoped_ptr<EntryKernel> UnpackEntry(sql::Statement* statement,
-                                             int* total_created_entries);
+  friend std::unique_ptr<EntryKernel> UnpackEntry(sql::Statement* statement,
+                                                  int* total_created_entries);
   friend void BindFields(const EntryKernel& entry,
                          sql::Statement* statement);
   SYNC_EXPORT friend std::ostream& operator<<(std::ostream& out, const Id& id);
   friend class SyncableIdTest;
 
   std::string s_;
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // SYNC_SYNCABLE_SYNCABLE_ID_H_