Deciding best connection to schedule requests on based on cwnd and idle time

net/socket/stream_socket.h

Index: net/socket/stream_socket.h
===================================================================
--- net/socket/stream_socket.h	(revision 88319)
+++ net/socket/stream_socket.h	(working copy)
@@ -79,6 +79,12 @@
   // TCP FastOpen is an experiment with sending data in the TCP SYN packet.
   virtual bool UsingTCPFastOpen() const = 0;
 
+  // Returns the number of bytes successfully read from this socket.
+  virtual int64 NumBytesRead() const = 0;
+
+  // Returns the RTT of this socket.
+  virtual double GetRTTInMs() const = 0;
+
  protected:
   // The following class is only used to gather statistics about the history of
   // a socket.  It is only instantiated and used in basic sockets, such as