components: Use stl utilities from the base namespace

components/storage_monitor/transient_device_ids.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.
 
 // TransientDeviceIds implementation.
 
 #include "components/storage_monitor/transient_device_ids.h"
 
 #include "base/guid.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "components/storage_monitor/storage_info.h"
 
 namespace storage_monitor {
 
 TransientDeviceIds::TransientDeviceIds() {}
 
 TransientDeviceIds::~TransientDeviceIds() {}
 
 std::string TransientDeviceIds::GetTransientIdForDeviceId(
     const std::string& device_id) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
-  if (!ContainsKey(device_id_map_, device_id)) {
+  if (!base::ContainsKey(device_id_map_, device_id)) {
     std::string transient_id;
     do {
       transient_id = base::GenerateGUID();
-    } while (ContainsKey(transient_id_map_, transient_id));
+    } while (base::ContainsKey(transient_id_map_, transient_id));
 
     device_id_map_[device_id] = transient_id;
     transient_id_map_[transient_id] = device_id;
   }
 
   return device_id_map_[device_id];
 }
 
 std::string TransientDeviceIds::DeviceIdFromTransientId(
     const std::string& transient_id) const {
   IdMap::const_iterator it = transient_id_map_.find(transient_id);
   if (it == transient_id_map_.end())
     return std::string();
   return it->second;
 }
 
 }  // namespace storage_monitor