Remove unused IsHandshake argument to QuicConnection::OnCanWrite.

net/quic/quic_connection.h

 // Copyright (c) 2012 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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 440 matching lines @@
   const QuicDecrypter* alternative_decrypter() const;
 
   bool is_server() const { return is_server_; }
 
   // Returns the underlying sent packet manager.
   const QuicSentPacketManager& sent_packet_manager() const {
     return sent_packet_manager_;
   }
 
   bool CanWrite(TransmissionType transmission_type,
-                HasRetransmittableData retransmittable,
-                IsHandshake handshake);
+                HasRetransmittableData retransmittable);
 
   uint32 max_flow_control_receive_window_bytes() const {
     return max_flow_control_receive_window_bytes_;
   }
 
   // Stores current batch state for connection, puts the connection
   // into batch mode, and destruction restores the stored batch state.
   // While the bundler is in scope, any generated frames are bundled
   // as densely as possible into packets.  In addition, this bundler
   // can be configured to ensure that an ACK frame is included in the
@@ skipping 293 matching lines @@
 
   // Used for connection level flow control.
   scoped_ptr<QuicFlowController> flow_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_