Port QuicServer to Chrome network stack

net/quic/quic_default_packet_writer.h

Index: net/quic/quic_default_packet_writer.h
diff --git a/net/quic/quic_default_packet_writer.h b/net/quic/quic_default_packet_writer.h
index 66b6a0f4f72181be441d80c5fd1492a503469393..1d815c285a9baf47e18297eede1197febcd0150a 100644
--- a/net/quic/quic_default_packet_writer.h
+++ b/net/quic/quic_default_packet_writer.h
@@ -27,16 +27,20 @@ class NET_EXPORT_PRIVATE QuicDefaultPacketWriter : public QuicPacketWriter {
 
   // QuicPacketWriter
   virtual WriteResult WritePacket(
-      const char* buffer, size_t buf_len,
-      const net::IPAddressNumber& self_address,
-      const net::IPEndPoint& peer_address) OVERRIDE;
+      const char* buffer,
+      size_t buf_len,
+      const IPAddressNumber& self_address,
+      const IPEndPoint& peer_address,
+      base::Callback<void(WriteResult wr)> callback) OVERRIDE;
   virtual bool IsWriteBlockedDataBuffered() const OVERRIDE;
   virtual bool IsWriteBlocked() const OVERRIDE;
   virtual void SetWritable() OVERRIDE;
 
   void OnWriteComplete(int rv);
-  void SetConnection(QuicConnection* connection) {
-    connection_ = connection;
+
+  // Set the writer to notify when writes complete.
+  void SetWriterToUnblock(QuicBlockedWriterInterface* blocked_writer) {
+    blocked_writer_ = blocked_writer;
   }
 
  protected:
@@ -47,7 +51,14 @@ class NET_EXPORT_PRIVATE QuicDefaultPacketWriter : public QuicPacketWriter {
  private:
   base::WeakPtrFactory<QuicDefaultPacketWriter> weak_factory_;
   DatagramClientSocket* socket_;
-  QuicConnection* connection_;
+
+  // To be notified after every successful write.
+  QuicBlockedWriterInterface* blocked_writer_;
+
+  // To be called after every successful write. May be null.
+  base::Callback<void(WriteResult wr)> callback_;
+
+  // Whether a write is currently in flight.
   bool write_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicDefaultPacketWriter);