Adds dynamic setting of FEC group size based on the connection's current

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 bae805074d5d3e2a21f5f89538ed7173b7966693..dcb0d54c730089ad148dc9906898f90547a888cf 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -17,6 +17,7 @@
 #include "net/quic/quic_client_session_base.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_framer.h"
+#include "net/quic/quic_sent_packet_manager.h"
 #include "net/quic/quic_session.h"
 #include "net/quic/test_tools/mock_clock.h"
 #include "net/quic/test_tools/mock_random.h"
@@ -530,6 +531,18 @@ class MockAckNotifierDelegate : public QuicAckNotifier::DelegateInterface {
   DISALLOW_COPY_AND_ASSIGN(MockAckNotifierDelegate);
 };
 
+class MockNetworkChangeVisitor :
+      public QuicSentPacketManager::NetworkChangeVisitor {
+ public:
+  MockNetworkChangeVisitor();
+  virtual ~MockNetworkChangeVisitor();
+
+  MOCK_METHOD1(OnCongestionWindowChange, void(QuicByteCount));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockNetworkChangeVisitor);
+};
+
 }  // namespace test
 }  // namespace net