chrome: Use stl utilities from the base namespace

chrome/browser/sync_file_system/drive_backend/metadata_database.cc

 // Copyright 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 "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
 
 #include <algorithm>
 #include <stack>
 #include <utility>
 
@@ skipping 1418 matching lines @@
     std::string parent_folder_id = metadata.details().parent_folder_ids(i);
     TrackerIDSet parent_trackers =
         index_->GetFileTrackerIDsByFileID(parent_folder_id);
     for (TrackerIDSet::const_iterator itr = parent_trackers.begin();
          itr != parent_trackers.end(); ++itr) {
       FileTracker parent_tracker;
       index_->GetFileTracker(*itr, &parent_tracker);
       if (!parent_tracker.active())
         continue;
 
-      if (ContainsKey(parents_to_exclude, parent_tracker.tracker_id()))
+      if (base::ContainsKey(parents_to_exclude, parent_tracker.tracker_id()))
         continue;
 
       CreateTrackerForParentAndFileMetadata(
           parent_tracker, metadata, option);
     }
   }
 }
 
 int64_t MetadataDatabase::IncrementTrackerID() {
   int64_t tracker_id = index_->GetNextTrackerID();
@@ skipping 354 matching lines @@
       return false;
 
   if (!parents.empty())
     return false;
 
   return true;
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system