Rather than passing initial_flow_control_window all the way down the

net/quic/test_tools/quic_test_utils.cc

Index: net/quic/test_tools/quic_test_utils.cc
diff --git a/net/quic/test_tools/quic_test_utils.cc b/net/quic/test_tools/quic_test_utils.cc
index 8d8382aa73e5aa95ed75c4439dde1940419715d3..e61cc30aed8148c3c018aecd49b0f3f119e7c29b 100644
--- a/net/quic/test_tools/quic_test_utils.cc
+++ b/net/quic/test_tools/quic_test_utils.cc
@@ -301,8 +301,7 @@ bool PacketSavingConnection::SendOrQueuePacket(
 }
 
 MockSession::MockSession(QuicConnection* connection)
-    : QuicSession(connection, kInitialFlowControlWindowForTest,
-                  DefaultQuicConfig()) {
+    : QuicSession(connection, DefaultQuicConfig()) {
   ON_CALL(*this, WritevData(_, _, _, _, _, _))
       .WillByDefault(testing::Return(QuicConsumedData(0, false)));
 }
@@ -311,7 +310,7 @@ MockSession::~MockSession() {
 }
 
 TestSession::TestSession(QuicConnection* connection, const QuicConfig& config)
-    : QuicSession(connection, kInitialFlowControlWindowForTest, config),
+    : QuicSession(connection, config),
       crypto_stream_(NULL) {}
 
 TestSession::~TestSession() {}
@@ -326,7 +325,7 @@ QuicCryptoStream* TestSession::GetCryptoStream() {
 
 TestClientSession::TestClientSession(QuicConnection* connection,
                                      const QuicConfig& config)
-    : QuicClientSessionBase(connection, kInitialFlowControlWindowForTest,
+    : QuicClientSessionBase(connection,
                             config),
       crypto_stream_(NULL) {
     EXPECT_CALL(*this, OnProofValid(_)).Times(AnyNumber());
@@ -587,6 +586,7 @@ MockEntropyCalculator::~MockEntropyCalculator() {}
 QuicConfig DefaultQuicConfig() {
   QuicConfig config;
   config.SetDefaults();
+  config.SetInitialFlowControlWindowToSend(kInitialFlowControlWindowForTest);
   return config;
 }