Rewrite a DLOG message to make it more readable. Currently the output is:

net/quic/core/reliable_quic_stream.cc

Index: net/quic/core/reliable_quic_stream.cc
diff --git a/net/quic/core/reliable_quic_stream.cc b/net/quic/core/reliable_quic_stream.cc
index 1c71776d56ef578fe5c312863639c418ff430dc6..42cffbd23f4ab62d04ec6be64214290cdd552ff7 100644
--- a/net/quic/core/reliable_quic_stream.cc
+++ b/net/quic/core/reliable_quic_stream.cc
@@ -95,7 +95,8 @@ void ReliableQuicStream::OnStreamFrame(const QuicStreamFrame& frame) {
   }
 
   if (read_side_closed_) {
-    DVLOG(1) << ENDPOINT << "Ignoring data in frame " << frame.stream_id;
+    DVLOG(1) << ENDPOINT << "Stream " << frame.stream_id
+             << " is closed for reading. Ignoring newly received stream data.";
     // The subclass does not want to read data:  blackhole the data.
     return;
   }