Convert //sync from scoped_ptr to std::unique_ptr

sync/engine/directory_commit_contribution.h

 // Copyright 2014 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_ENGINE_DIRECTORY_COMMIT_CONTRIBUTION_H_
 #define SYNC_ENGINE_DIRECTORY_COMMIT_CONTRIBUTION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "sync/base/sync_export.h"
 #include "sync/engine/commit_contribution.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/util/syncer_error.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/directory_type_debug_info_emitter.h"
 #include "sync/sessions/status_controller.h"
 
 namespace syncer {
 
@@ skipping 15 matching lines @@
  public:
   // This destructor will DCHECK if UnsetSyncingBits() has not been called yet.
   ~DirectoryCommitContribution() override;
 
   // Build a CommitContribution from the IS_UNSYNCED items in |dir| with the
   // given |type|.  The contribution will include at most |max_items| entries.
   //
   // This function may return NULL if this type has no items ready for and
   // requiring commit.  This function may make model neutral changes to the
   // directory.
-  static scoped_ptr<DirectoryCommitContribution> Build(
+  static std::unique_ptr<DirectoryCommitContribution> Build(
       syncable::Directory* dir,
       ModelType type,
       size_t max_items,
       DirectoryTypeDebugInfoEmitter* debug_info_emitter);
 
   // Serialize this contribution's entries to the given commit request |msg|.
   //
   // This function is not const.  It will update some state in this contribution
   // that will be used when processing the associated commit response.  This
   // function should not be called more than once.
@@ skipping 45 matching lines @@
 
   // A pointer to the commit counters of our parent CommitContributor.
   DirectoryTypeDebugInfoEmitter* debug_info_emitter_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectoryCommitContribution);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_DIRECTORY_COMMIT_CONTRIBUTION_H_