Fixed integer signing bug in cubic bytes/packet implementation

net/quic/core/congestion_control/cubic_bytes.h

 // Copyright (c) 2015 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.
 
 // Cubic algorithm, helper class to TCP cubic.
 // For details see http://netsrv.csc.ncsu.edu/export/cubic_a_new_tcp_2008.pdf.
 
 #ifndef NET_QUIC_CONGESTION_CONTROL_CUBIC_BYTES_H_
 #define NET_QUIC_CONGESTION_CONTROL_CUBIC_BYTES_H_
 
@@ skipping 27 matching lines @@
   // follows a cubic function that depends on the time passed since last packet
   // loss.
   QuicByteCount CongestionWindowAfterAck(QuicByteCount acked_bytes,
                                          QuicByteCount current,
                                          QuicTime::Delta delay_min);
 
   // Call on ack arrival when sender is unable to use the available congestion
   // window. Resets Cubic state during quiescence.
   void OnApplicationLimited();
 
+  void SetFixConvexMode(bool fix_convex_mode);
+
  private:
   static const QuicTime::Delta MaxCubicTimeInterval() {
     return QuicTime::Delta::FromMilliseconds(30);
   }
 
   // Compute the TCP Cubic alpha and beta based on the current number of
   // connections.
   float Alpha() const;
   float Beta() const;
 
@@ skipping 24 matching lines @@
 
   // Origin point of cubic function.
   QuicByteCount origin_point_congestion_window_;
 
   // Time to origin point of cubic function in 2^10 fractions of a second.
   uint32_t time_to_origin_point_;
 
   // Last congestion window in packets computed by cubic function.
   QuicByteCount last_target_congestion_window_;
 
+  // Fix convex mode for cubic.
+  // TODO(jokulik):  Remove once the cubic convex experiment is done.
+  bool fix_convex_mode_;
+
   DISALLOW_COPY_AND_ASSIGN(CubicBytes);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CONGESTION_CONTROL_CUBIC_BYTES_H_