Bring back InterArrivalReceiver and rename it to TimestampeReceiver.

net/quic/congestion_control/timestamp_receiver.h

Index: net/quic/congestion_control/timestamp_receiver.h
diff --git a/net/quic/congestion_control/timestamp_receiver.h b/net/quic/congestion_control/timestamp_receiver.h
new file mode 100644
index 0000000000000000000000000000000000000000..3eb2a7c461e65c485ec29c5b8a578987c11853c0
--- /dev/null
+++ b/net/quic/congestion_control/timestamp_receiver.h
@@ -0,0 +1,37 @@
+// Copyright 2014 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.
+
+#ifndef NET_QUIC_CONGESTION_CONTROL_TIMESTAMP_RECEIVER_H_
+#define NET_QUIC_CONGESTION_CONTROL_TIMESTAMP_RECEIVER_H_
+
+#include "base/basictypes.h"
+#include "net/quic/congestion_control/receive_algorithm_interface.h"
+#include "net/quic/quic_clock.h"
+#include "net/quic/quic_protocol.h"
+
+namespace net {
+
+class NET_EXPORT_PRIVATE TimestampReceiver : public ReceiveAlgorithmInterface {
+ public:
+  TimestampReceiver();
+  virtual ~TimestampReceiver();
+
+  virtual bool GenerateCongestionFeedback(
+      QuicCongestionFeedbackFrame* feedback) OVERRIDE;
+
+  virtual void RecordIncomingPacket(QuicByteCount bytes,
+                                    QuicPacketSequenceNumber sequence_number,
+                                    QuicTime timestamp) OVERRIDE;
+
+ private:
+  // The set of received packets since the last feedback was sent, along with
+  // their arrival times.
+  TimeMap received_packet_times_;
+
+  DISALLOW_COPY_AND_ASSIGN(TimestampReceiver);
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_CONGESTION_CONTROL_TIMESTAMP_RECEIVER_H_