Land Recent QUIC changes.

net/tools/quic/test_tools/quic_test_utils.cc

Index: net/tools/quic/test_tools/quic_test_utils.cc
diff --git a/net/tools/quic/test_tools/quic_test_utils.cc b/net/tools/quic/test_tools/quic_test_utils.cc
index 95f1fb215ea2236db036c95a3b405baf2af1441f..481a57f833062bf28724769697e75cf4b89b763e 100644
--- a/net/tools/quic/test_tools/quic_test_utils.cc
+++ b/net/tools/quic/test_tools/quic_test_utils.cc
@@ -76,6 +76,12 @@ QuicCryptoStream* TestSession::GetCryptoStream() {
   return crypto_stream_;
 }
 
+MockAckNotifierDelegate::MockAckNotifierDelegate() {
+}
+
+MockAckNotifierDelegate::~MockAckNotifierDelegate() {
+}
+
 }  // namespace test
 }  // namespace tools
 }  // namespace net