Update from https://crrev.com/316786

net/quic/congestion_control/cube_root.h

Index: net/quic/congestion_control/cube_root.h
diff --git a/net/quic/congestion_control/cube_root.h b/net/quic/congestion_control/cube_root.h
deleted file mode 100644
index 293a7199f86b42aed28b53acc4272ab897d592a7..0000000000000000000000000000000000000000
--- a/net/quic/congestion_control/cube_root.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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.
-
-#ifndef NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_
-#define NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_
-
-#include "base/basictypes.h"
-#include "net/base/net_export.h"
-
-namespace net {
-
-class NET_EXPORT_PRIVATE CubeRoot {
- public:
-  // Calculates the cube root using a table lookup followed by one Newton-
-  // Raphson iteration.
-  static uint32 Root(uint64 a);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CubeRoot);
-};
-
-}  // namespace net
-#endif  // NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_