Use the kClientDataStreamId1 constant instead of hardcoded "5"

net/tools/quic/quic_spdy_server_stream_test.cc

 // Copyright (c) 2013 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/tools/quic/quic_spdy_server_stream.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_flags.h"
@@ skipping 85 matching lines @@
 
     headers_string_ =
         net::SpdyUtils::SerializeUncompressedHeaders(request_headers);
 
     // New streams rely on having the peer's flow control receive window
     // negotiated in the config.
     session_.config()->SetInitialStreamFlowControlWindowToSend(
         kInitialStreamFlowControlWindowForTest);
     session_.config()->SetInitialSessionFlowControlWindowToSend(
         kInitialSessionFlowControlWindowForTest);
-    stream_ = new QuicSpdyServerStreamPeer(5, &session_);
+    stream_ = new QuicSpdyServerStreamPeer(::net::test::kClientDataStreamId1,
+                                           &session_);
     // Register stream_ in dynamic_stream_map_ and pass ownership to session_.
     session_.ActivateStream(stream_);
 
     QuicInMemoryCachePeer::ResetForTests();
   }
 
   ~QuicSpdyServerStreamTest() override {
     QuicInMemoryCachePeer::ResetForTests();
   }
 
@@ skipping 321 matching lines @@
   StringPiece data(arr, arraysize(arr));
   QuicStreamFrame frame(stream_->id(), true, 0, data);
   // Verify that we don't crash when we get a invalid headers in stream frame.
   stream_->OnStreamFrame(frame);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace tools
 }  // namespace net