Update from https://crrev.com/316786

net/tools/quic/test_tools/packet_dropping_test_writer.h

 // Copyright 2013 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_TOOLS_QUIC_TEST_TOOLS_PACKET_DROPPING_TEST_WRITER_H_
 #define NET_TOOLS_QUIC_TEST_TOOLS_PACKET_DROPPING_TEST_WRITER_H_
 
 #include <list>
 #include <string>
 
@@ skipping 67 matching lines @@
   }
 
   // The percent of time a packet is simulated as being reordered.
   void set_fake_reorder_percentage(int32 fake_packet_reorder_percentage) {
     DCHECK(clock_);
     base::AutoLock locked(config_mutex_);
     DCHECK(!fake_packet_delay_.IsZero());
     fake_packet_reorder_percentage_ = fake_packet_reorder_percentage;
   }
 
-  // The percent of time WritePacket will block and set WriteResult's status
-  // to WRITE_STATUS_BLOCKED.
+  // The delay before writing this packet.
   void set_fake_packet_delay(QuicTime::Delta fake_packet_delay) {
     DCHECK(clock_);
     base::AutoLock locked(config_mutex_);
     fake_packet_delay_  = fake_packet_delay;
   }
 
   // The maximum bandwidth and buffer size of the connection.  When these are
   // set, packets will be delayed until a connection with that bandwidth would
   // transmit it.  Once the |buffer_size| is reached, all new packets are
   // dropped.
@@ skipping 50 matching lines @@
   QuicByteCount buffer_size_;
 
   DISALLOW_COPY_AND_ASSIGN(PacketDroppingTestWriter);
 };
 
 }  // namespace test
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_TEST_TOOLS_PACKET_DROPPING_TEST_WRITER_H_