Rollback of internal changelist 128865569.

net/quic/core/congestion_control/pacing_sender.h

Index: net/quic/core/congestion_control/pacing_sender.h
diff --git a/net/quic/core/congestion_control/pacing_sender.h b/net/quic/core/congestion_control/pacing_sender.h
index 55ad1991a053f0a7e6e4f99d5d672470ec535908..68ef80bd1b91cd87ab07b26ac33e7e5add83a168 100644
--- a/net/quic/core/congestion_control/pacing_sender.h
+++ b/net/quic/core/congestion_control/pacing_sender.h
@@ -27,13 +27,16 @@ namespace net {
 
 class NET_EXPORT_PRIVATE PacingSender : public SendAlgorithmInterface {
  public:
-  PacingSender();
+  // Create a PacingSender to wrap the specified sender.  |alarm_granularity|
+  // indicates to the pacer to send that far into the future, since it should
+  // not expect a callback before that time delta.  |initial_packet_burst| is
+  // the number of packets sent without pacing after quiescence.
+  PacingSender(SendAlgorithmInterface* sender,
+               QuicTime::Delta alarm_granularity,
+               uint32_t initial_packet_burst);
   ~PacingSender() override;
 
   void SetMaxPacingRate(QuicBandwidth max_pacing_rate);
-  // Sets the underlying sender. Takes ownership of |sender| if |owns_sender| is
-  // true.
-  void SetSender(SendAlgorithmInterface* sender, bool owns_sender);
 
   // SendAlgorithmInterface methods.
   void SetFromConfig(const QuicConfig& config,
@@ -67,8 +70,12 @@ class NET_EXPORT_PRIVATE PacingSender : public SendAlgorithmInterface {
   // End implementation of SendAlgorithmInterface.
 
  private:
-  // Underlying sender. Owned if |owns_sender_| is true.
-  SendAlgorithmInterface* sender_;
+  std::unique_ptr<SendAlgorithmInterface> sender_;  // Underlying sender.
+  // The estimated system alarm granularity.
+  const QuicTime::Delta alarm_granularity_;
+  // Configured maximum size of the burst coming out of quiescence.  The burst
+  // is never larger than the current CWND in packets.
+  const uint32_t initial_packet_burst_;
   // If not QuicBandidth::Zero, the maximum rate the PacingSender will use.
   QuicBandwidth max_pacing_rate_;
 
@@ -78,7 +85,6 @@ class NET_EXPORT_PRIVATE PacingSender : public SendAlgorithmInterface {
   QuicTime last_delayed_packet_sent_time_;
   QuicTime ideal_next_packet_send_time_;  // When can the next packet be sent.
   mutable bool was_last_send_delayed_;  // True when the last send was delayed.
-  bool owns_sender_;                    // True if PacingSender owns |sender_|.
 
   DISALLOW_COPY_AND_ASSIGN(PacingSender);
 };