Use emplace_back when adding an item to WebSocket stalled requests

net/socket/websocket_transport_client_socket_pool.cc

Index: net/socket/websocket_transport_client_socket_pool.cc
diff --git a/net/socket/websocket_transport_client_socket_pool.cc b/net/socket/websocket_transport_client_socket_pool.cc
index 73bf536272739c7ddb614d1c6dedb144d7047500..5493385f5f1f5f27dc8698983a12524107ce6520 100644
--- a/net/socket/websocket_transport_client_socket_pool.cc
+++ b/net/socket/websocket_transport_client_socket_pool.cc
@@ -342,10 +342,8 @@ int WebSocketTransportClientSocketPool::RequestSocket(
   if (ReachedMaxSocketsLimit() &&
       respect_limits == ClientSocketPool::RespectLimits::ENABLED) {
     request_net_log.AddEvent(NetLogEventType::SOCKET_POOL_STALLED_MAX_SOCKETS);
-    // TODO(ricea): Use emplace_back when C++11 becomes allowed.
-    StalledRequest request(
-        casted_params, priority, handle, callback, request_net_log);
-    stalled_request_queue_.push_back(request);
+    stalled_request_queue_.emplace_back(casted_params, priority, handle,
+                                        callback, request_net_log);
     StalledRequestQueue::iterator iterator = stalled_request_queue_.end();
     --iterator;
     DCHECK_EQ(handle, iterator->handle);