chrome: Use stl utilities from the base namespace

chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h"
 
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/stl_util.h"
@@ skipping 205 matching lines @@
       if (!RemovePrefix(itr->key().ToString(), kFileTrackerKeyPrefix, nullptr))
         break;
 
       std::unique_ptr<FileTracker> tracker(new FileTracker);
       if (!tracker->ParseFromString(itr->value().ToString())) {
         util::Log(logging::LOG_WARNING, FROM_HERE,
                   "Failed to parse a Tracker");
         continue;
       }
 
-      if (ContainsKey(visited_trackers, tracker->tracker_id())) {
+      if (base::ContainsKey(visited_trackers, tracker->tracker_id())) {
         referred_file_ids.insert(tracker->file_id());
       } else {
         PutFileTrackerDeletionToDB(tracker->tracker_id(), db);
       }
     }
   }
 
   // Delete all unreferred metadata.
   {
     std::unique_ptr<LevelDBWrapper::Iterator> itr = db->NewIterator();
     for (itr->Seek(kFileMetadataKeyPrefix); itr->Valid(); itr->Next()) {
       if (!RemovePrefix(itr->key().ToString(), kFileMetadataKeyPrefix, nullptr))
         break;
 
       std::unique_ptr<FileMetadata> metadata(new FileMetadata);
       if (!metadata->ParseFromString(itr->value().ToString())) {
         util::Log(logging::LOG_WARNING, FROM_HERE,
                   "Failed to parse a Tracker");
         continue;
       }
 
-      if (!ContainsKey(referred_file_ids, metadata->file_id()))
+      if (!base::ContainsKey(referred_file_ids, metadata->file_id()))
         PutFileMetadataDeletionToDB(metadata->file_id(), db);
     }
   }
 }
 
 }  // namespace
 
 // static
 std::unique_ptr<MetadataDatabaseIndexOnDisk>
 MetadataDatabaseIndexOnDisk::Create(LevelDBWrapper* db) {
@@ skipping 953 matching lines @@
   for (itr->Seek(prefix); itr->Valid();) {
     const std::string key = itr->key().ToString();
     if (!base::StartsWith(key, prefix, base::CompareCase::SENSITIVE))
       break;
     itr->Delete();
   }
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system