gfe-relnote: Remove draining_streams_ from QuicSession. Protected by gfe2_reloadable_flag_quic_deprecate_draining_streams.

PiperOrigin-RevId: 306919260
Change-Id: I6d40df89133f450ff3e913280465aff328714408
diff --git a/quic/core/quic_stream.h b/quic/core/quic_stream.h
index bf12149..b8e940f 100644
--- a/quic/core/quic_stream.h
+++ b/quic/core/quic_stream.h
@@ -358,6 +358,8 @@
   // Returns true if the stream is static.
   bool is_static() const { return is_static_; }
 
+  bool was_draining() const { return was_draining_; }
+
   static spdy::SpdyStreamPrecedence CalculateDefaultPriority(
       const QuicSession* session);
 
@@ -534,6 +536,10 @@
   // If initialized, reset this stream at this deadline.
   QuicTime deadline_;
 
+  // True if this stream has entered draining state. Only used when
+  // quic_deprecate_draining_streams is true.
+  bool was_draining_;
+
   // Indicates whether this stream is bidirectional, read unidirectional or
   // write unidirectional.
   const StreamType type_;