components: Use stl utilities from the base namespace

components/storage_monitor/storage_monitor.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 "components/storage_monitor/storage_monitor.h"
 
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/storage_monitor/removable_storage_observer.h"
 #include "components/storage_monitor/transient_device_ids.h"
@@ skipping 144 matching lines @@
            on_initialize_callbacks_.begin();
        iter != on_initialize_callbacks_.end(); ++iter) {
     iter->Run();
   }
   on_initialize_callbacks_.clear();
 }
 
 void StorageMonitor::ProcessAttach(const StorageInfo& info) {
   {
     base::AutoLock lock(storage_lock_);
-    if (ContainsKey(storage_map_, info.device_id())) {
+    if (base::ContainsKey(storage_map_, info.device_id())) {
       // This can happen if our unique id scheme fails. Ignore the incoming
       // non-unique attachment.
       return;
     }
     storage_map_.insert(std::make_pair(info.device_id(), info));
   }
 
   DVLOG(1) << "StorageAttached id " << info.device_id();
   if (StorageInfo::IsRemovableDevice(info.device_id())) {
     observer_list_->Notify(
@@ skipping 13 matching lines @@
   }
 
   DVLOG(1) << "StorageDetached for id " << id;
   if (StorageInfo::IsRemovableDevice(info.device_id())) {
     observer_list_->Notify(
         FROM_HERE, &RemovableStorageObserver::OnRemovableStorageDetached, info);
   }
 }
 
 }  // namespace storage_monitor