chrome: Use stl utilities from the base namespace

chrome/browser/chromeos/policy/device_local_account_policy_service.cc

 // Copyright (c) 2012 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/chromeos/policy/device_local_account_policy_service.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 71 matching lines @@
 // |subdirectories_to_keep| may be running while the clean-up is in progress.
 void DeleteOrphanedCaches(
     const base::FilePath& cache_root_dir,
     const std::set<std::string>& subdirectories_to_keep) {
   base::FileEnumerator enumerator(cache_root_dir,
                                   false,
                                   base::FileEnumerator::DIRECTORIES);
   for (base::FilePath path = enumerator.Next(); !path.empty();
        path = enumerator.Next()) {
     const std::string subdirectory(path.BaseName().MaybeAsASCII());
-    if (!ContainsKey(subdirectories_to_keep, subdirectory))
+    if (!base::ContainsKey(subdirectories_to_keep, subdirectory))
       base::DeleteFile(path, true);
   }
 }
 
 // Removes the subdirectory belonging to |account_id_to_delete| from the cache
 // directory. No cache belonging to |account_id_to_delete| may be running while
 // the removal is in progress.
 void DeleteObsoleteExtensionCache(const std::string& account_id_to_delete) {
   base::FilePath cache_root_dir;
   CHECK(PathService::Get(chromeos::DIR_DEVICE_LOCAL_ACCOUNT_EXTENSIONS,
@@ skipping 454 matching lines @@
   }
   return nullptr;
 }
 
 void DeviceLocalAccountPolicyService::NotifyPolicyUpdated(
     const std::string& user_id) {
   FOR_EACH_OBSERVER(Observer, observers_, OnPolicyUpdated(user_id));
 }
 
 }  // namespace policy