Introduce QUIC_VERSION_20: allowing endpoints to set different

net/quic/test_tools/quic_test_utils.h

Index: net/quic/test_tools/quic_test_utils.h
diff --git a/net/quic/test_tools/quic_test_utils.h b/net/quic/test_tools/quic_test_utils.h
index 6d1de91cdf785d62e8d7ce49db99f995b6d3f8cd..574e7d15c675dc1985490beb217a7f135781039b 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -29,7 +29,10 @@ namespace test {
 
 static const QuicConnectionId kTestConnectionId = 42;
 static const int kTestPort = 123;
-static const uint32 kInitialFlowControlWindowForTest = 32 * 1024;  // 32 KB
+static const uint32 kInitialStreamFlowControlWindowForTest =
+    32 * 1024;  // 32 KB
+static const uint32 kInitialSessionFlowControlWindowForTest =
+    64 * 1024;  // 64 KB
 
 // Data stream IDs start at 5: the crypto stream is 1, headers stream is 3.
 static const QuicStreamId kClientDataStreamId1 = 5;