void AddBytesSent(uint64 bytes_sent);
// Set a new send window offset.
- // Returns true if this changes send_window_offset_, and false in the case
- // where |new_send_window| is <= send_window_offset_.
+ // Returns true if this increases send_window_offset_ and is now blocked.
bool UpdateSendWindowOffset(uint64 new_send_window_offset);
// Returns the current available send window.