mojo: Use stl utilities from the base namespace

mojo/public/cpp/bindings/lib/router.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 "mojo/public/cpp/bindings/lib/router.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 159 matching lines @@
 
   bool response_received = false;
   std::unique_ptr<MessageReceiver> sync_responder(responder);
   sync_responses_.insert(std::make_pair(
       request_id, base::WrapUnique(new SyncResponseInfo(&response_received))));
 
   base::WeakPtr<Router> weak_self = weak_factory_.GetWeakPtr();
   connector_.SyncWatch(&response_received);
   // Make sure that this instance hasn't been destroyed.
   if (weak_self) {
-    DCHECK(ContainsKey(sync_responses_, request_id));
+    DCHECK(base::ContainsKey(sync_responses_, request_id));
     auto iter = sync_responses_.find(request_id);
     DCHECK_EQ(&response_received, iter->second->response_received);
     if (response_received) {
       std::unique_ptr<Message> response = std::move(iter->second->response);
       ignore_result(sync_responder->Accept(response.get()));
     }
     sync_responses_.erase(iter);
   }
 
   // Return true means that we take ownership of |responder|.
@@ skipping 123 matching lines @@
 
   encountered_error_ = true;
   if (!error_handler_.is_null())
     error_handler_.Run();
 }
 
 // ----------------------------------------------------------------------------
 
 }  // namespace internal
 }  // namespace mojo