Track the number of "early" frames received in a QUIC stream.

net/quic/quic_stream_sequencer_test.cc

 // 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.
 
 #include "net/quic/quic_stream_sequencer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 208 matching lines @@
   EXPECT_EQ("c", buffered_frames_->find(2)->second);
 }
 
 TEST_F(QuicStreamSequencerTest, NextxFrameNotConsumed) {
   EXPECT_CALL(stream_, ProcessRawData(StrEq("abc"), 3)).WillOnce(Return(0));
 
   OnFrame(0, "abc");
   EXPECT_EQ(1u, buffered_frames_->size());
   EXPECT_EQ(0u, sequencer_->num_bytes_consumed());
   EXPECT_EQ("abc", buffered_frames_->find(0)->second);
+  EXPECT_EQ(0, sequencer_->num_early_frames_received());
 }
 
 TEST_F(QuicStreamSequencerTest, FutureFrameNotProcessed) {
   OnFrame(3, "abc");
   EXPECT_EQ(1u, buffered_frames_->size());
   EXPECT_EQ(0u, sequencer_->num_bytes_consumed());
   EXPECT_EQ("abc", buffered_frames_->find(3)->second);
+  EXPECT_EQ(1, sequencer_->num_early_frames_received());
 }
 
 TEST_F(QuicStreamSequencerTest, OutOfOrderFrameProcessed) {
   // Buffer the first
   OnFrame(6, "ghi");
   EXPECT_EQ(1u, buffered_frames_->size());
   EXPECT_EQ(0u, sequencer_->num_bytes_consumed());
   EXPECT_EQ(3u, sequencer_->num_bytes_buffered());
   // Buffer the second
   OnFrame(3, "def");
@@ skipping 191 matching lines @@
   QuicStreamFrame frame2(kClientDataStreamId1, false, 2, MakeIOVector("hello"));
   EXPECT_TRUE(sequencer_->FrameOverlapsBufferedData(frame2));
   EXPECT_CALL(stream_, CloseConnectionWithDetails(QUIC_INVALID_STREAM_FRAME, _))
       .Times(1);
   sequencer_->OnStreamFrame(frame2);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net