Convert ignore_limits from a SocketParam to a socket request argument.

net/http/http_proxy_client_socket_pool.h

Index: net/http/http_proxy_client_socket_pool.h
diff --git a/net/http/http_proxy_client_socket_pool.h b/net/http/http_proxy_client_socket_pool.h
index 44f9ab6703dbaaeb373ae06c118f4d6f6aa0b66f..2c77fd521022c40162529c53fb5881c4432c1a3f 100644
--- a/net/http/http_proxy_client_socket_pool.h
+++ b/net/http/http_proxy_client_socket_pool.h
@@ -100,6 +100,7 @@ class HttpProxyConnectJob : public ConnectJob {
  public:
   HttpProxyConnectJob(const std::string& group_name,
                       RequestPriority priority,
+                      bool ignore_limits,
                       const scoped_refptr<HttpProxySocketParams>& params,
                       const base::TimeDelta& timeout_duration,
                       TransportClientSocketPool* transport_pool,
@@ -152,6 +153,7 @@ class NET_EXPORT_PRIVATE HttpProxyClientSocketPool
   int RequestSocket(const std::string& group_name,
                     const void* connect_params,
                     RequestPriority priority,
+                    bool ignore_limits,
                     ClientSocketHandle* handle,
                     const CompletionCallback& callback,
                     const BoundNetLog& net_log) override;