QuicSession no longer directly owns its QuicConnection. Not flag protected.

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 d447126bcf7011a6c78253aadef6e25f6b286ae2..30e1f020888471669e4f333a821d67039f68d811 100644
--- a/net/quic/test_tools/quic_test_utils.cc
+++ b/net/quic/test_tools/quic_test_utils.cc
@@ -350,7 +350,9 @@ MockQuicSession::MockQuicSession(QuicConnection* connection)
       .WillByDefault(testing::Return(QuicConsumedData(0, false)));
 }
 
-MockQuicSession::~MockQuicSession() {}
+MockQuicSession::~MockQuicSession() {
+  delete connection();
+}
 
 // static
 QuicConsumedData MockQuicSession::ConsumeAllData(
@@ -371,7 +373,9 @@ MockQuicSpdySession::MockQuicSpdySession(QuicConnection* connection)
       .WillByDefault(testing::Return(QuicConsumedData(0, false)));
 }
 
-MockQuicSpdySession::~MockQuicSpdySession() {}
+MockQuicSpdySession::~MockQuicSpdySession() {
+  delete connection();
+}
 
 TestQuicSpdyServerSession::TestQuicSpdyServerSession(
     QuicConnection* connection,
@@ -392,7 +396,9 @@ TestQuicSpdyServerSession::TestQuicSpdyServerSession(
       .WillByDefault(testing::Return(true));
 }
 
-TestQuicSpdyServerSession::~TestQuicSpdyServerSession() {}
+TestQuicSpdyServerSession::~TestQuicSpdyServerSession() {
+  delete connection();
+}
 
 QuicCryptoServerStreamBase*
 TestQuicSpdyServerSession::CreateQuicCryptoServerStream(