Add a new histogram Net.QuicSession.HeadersStreamEarlyFramesReceived

net/quic/reliable_quic_stream.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 base class for client/server reliable streams.
 
 #ifndef NET_QUIC_RELIABLE_QUIC_STREAM_H_
 #define NET_QUIC_RELIABLE_QUIC_STREAM_H_
 
 #include <sys/types.h>
@@ skipping 79 matching lines @@
   void set_fin_sent(bool fin_sent) { fin_sent_ = fin_sent; }
   void set_rst_sent(bool rst_sent) { rst_sent_ = rst_sent; }
 
   void set_fec_policy(FecPolicy fec_policy) { fec_policy_ = fec_policy; }
   FecPolicy fec_policy() const { return fec_policy_; }
 
   // Adjust our flow control windows according to new offset in |frame|.
   virtual void OnWindowUpdateFrame(const QuicWindowUpdateFrame& frame);
 
   int num_frames_received() const;
-
+  int num_early_frames_received() const;
   int num_duplicate_frames_received() const;
 
   QuicFlowController* flow_controller() { return &flow_controller_; }
 
   // Called when we see a frame which could increase the highest offset.
   // Returns true if the highest offset did increase.
   bool MaybeIncreaseHighestReceivedOffset(QuicStreamOffset new_offset);
   // Called when bytese are sent to the peer.
   void AddBytesSent(QuicByteCount bytes);
   // Called by the stream sequencer as bytes are consumed from the buffer.
@@ skipping 133 matching lines @@
   // connection level flow control limits (but are stream level flow control
   // limited).
   bool stream_contributes_to_connection_flow_control_;
 
   DISALLOW_COPY_AND_ASSIGN(ReliableQuicStream);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_RELIABLE_QUIC_STREAM_H_