Re-write many calls to WrapUnique() with MakeUnique()

components/drive/chromeos/search_metadata.cc

 // Copyright (c) 2013 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 "components/drive/chromeos/search_metadata.h"
 
 #include <algorithm>
 #include <queue>
 #include <utility>
 
@@ skipping 140 matching lines @@
   // Hidden entry should not be returned.
   bool hidden = false;
   FileError error = hidden_entry_classifier->IsHidden(entry, &hidden);
   if (error != FILE_ERROR_OK || hidden)
     return error;
 
   // Make space for |entry| when appropriate.
   if (result_candidates->size() == at_most_num_matches)
     result_candidates->pop();
   result_candidates->push(
-      base::WrapUnique(new ResultCandidate(it->GetID(), entry, highlighted)));
+      base::MakeUnique<ResultCandidate>(it->GetID(), entry, highlighted));
   return FILE_ERROR_OK;
 }
 
 // Implements SearchMetadata().
 FileError SearchMetadataOnBlockingPool(ResourceMetadata* resource_metadata,
                                        const std::string& query_text,
                                        const SearchMetadataPredicate& predicate,
                                        int at_most_num_matches,
                                        MetadataSearchResultVector* results) {
   ResultCandidateQueue result_candidates;
@@ skipping 177 matching lines @@
   DCHECK_GE(text16.size(), start_current_segment);
   AppendStringWithHighlight(
       text16, start_current_segment, text16.size() - start_current_segment,
       highlights[start_current_segment], highlighted_text);
 
   return true;
 }
 
 }  // namespace internal
 }  // namespace drive