Release read buffer of QuicCryptoStream when incoming message become less frequent. Protected by --…

net/quic/test_tools/quic_stream_sequencer_peer.cc

Index: net/quic/test_tools/quic_stream_sequencer_peer.cc
diff --git a/net/quic/test_tools/quic_stream_sequencer_peer.cc b/net/quic/test_tools/quic_stream_sequencer_peer.cc
index 71808ba27537cc8aa62d58efdb0965dc995c1641..d78543b0465ea79175e30a827c45015527ab2cd7 100644
--- a/net/quic/test_tools/quic_stream_sequencer_peer.cc
+++ b/net/quic/test_tools/quic_stream_sequencer_peer.cc
@@ -5,6 +5,7 @@
 #include "net/quic/test_tools/quic_stream_sequencer_peer.h"
 
 #include "net/quic/core/quic_stream_sequencer.h"
+#include "net/quic/test_tools/quic_stream_sequencer_buffer_peer.h"
 
 using std::map;
 using std::string;
@@ -24,5 +25,12 @@ QuicStreamOffset QuicStreamSequencerPeer::GetCloseOffset(
   return sequencer->close_offset_;
 }
 
+// static
+bool QuicStreamSequencerPeer::IsUnderlyingBufferAllocated(
+    QuicStreamSequencer* sequencer) {
+  QuicStreamSequencerBufferPeer buffer_peer(&(sequencer->buffered_frames_));
+  return buffer_peer.IsBufferAllocated();
+}
+
 }  // namespace test
 }  // namespace net