chrome: Use stl utilities from the base namespace

chrome/browser/extensions/api/identity/identity_mint_queue.cc

 // Copyright (c) 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/extensions/api/identity/identity_mint_queue.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/trace_event/trace_event.h"
 
@@ skipping 55 matching lines @@
                          request,
                          "completed",
                          "RequestCancel");
   GetRequestQueueMap(MINT_TYPE_INTERACTIVE)[key].remove(request);
   GetRequestQueueMap(MINT_TYPE_NONINTERACTIVE)[key].remove(request);
 }
 
 bool IdentityMintRequestQueue::empty(IdentityMintRequestQueue::MintType type,
                                      const ExtensionTokenKey& key) {
   RequestQueueMap& request_queue_map = GetRequestQueueMap(type);
-  return !ContainsKey(request_queue_map, key) ||
-      (request_queue_map.find(key))->second.empty();
+  return !base::ContainsKey(request_queue_map, key) ||
+         (request_queue_map.find(key))->second.empty();
 }
 
 IdentityMintRequestQueue::RequestQueueMap&
 IdentityMintRequestQueue::GetRequestQueueMap(
     IdentityMintRequestQueue::MintType type) {
   return (type == MINT_TYPE_INTERACTIVE) ? interactive_request_queue_map_
                                          : noninteractive_request_queue_map_;
 }
 
 void IdentityMintRequestQueue::RunRequest(
     IdentityMintRequestQueue::MintType type,
     RequestQueue& request_queue) {
   TRACE_EVENT_ASYNC_STEP_INTO0(
       "identity", "IdentityMintRequestQueue", request_queue.front(), "RUNNING");
   request_queue.front()->StartMintToken(type);
 }
 
 }  // namespace extensions