Remove the flag which disables non NAT address migration.

net/tools/quic/end_to_end_test.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <sys/epoll.h>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 1455 matching lines @@
     return QuicPacketWriterWrapper::WritePacket(
         buffer, buf_len, self_address_.address().bytes(), peer_address);
   }
 
   bool IsWriteBlockedDataBuffered() const override { return false; }
 
   IPEndPoint self_address_;
 };
 
 TEST_P(EndToEndTest, ConnectionMigrationClientIPChanged) {
-  ValueRestore<bool> old_flag(&FLAGS_quic_disable_non_nat_address_migration,
-                              false);
   ASSERT_TRUE(Initialize());
 
   EXPECT_EQ(kFooResponseBody, client_->SendSynchronousRequest("/foo"));
   EXPECT_EQ(200u, client_->response_headers()->parsed_response_code());
 
   // Store the client IP address which was used to send the first request.
   IPAddressNumber old_host =
       client_->client()->GetLatestClientAddress().address().bytes();
 
   // Migrate socket to the new IP address.
   IPAddressNumber new_host;
   CHECK(net::ParseIPLiteralToNumber("127.0.0.2", &new_host));
   EXPECT_NE(old_host, new_host);
   ASSERT_TRUE(client_->client()->MigrateSocket(new_host));
 
   // Send a request using the new socket.
   EXPECT_EQ(kBarResponseBody, client_->SendSynchronousRequest("/bar"));
   EXPECT_EQ(200u, client_->response_headers()->parsed_response_code());
 }
 
 TEST_P(EndToEndTest, ConnectionMigrationClientPortChanged) {
-  ValueRestore<bool> old_flag(&FLAGS_quic_disable_non_nat_address_migration,
-                              false);
   // Tests that the client's port can change during an established QUIC
   // connection, and that doing so does not result in the connection being
   // closed by the server.
   ASSERT_TRUE(Initialize());
 
   EXPECT_EQ(kFooResponseBody, client_->SendSynchronousRequest("/foo"));
   EXPECT_EQ(200u, client_->response_headers()->parsed_response_code());
 
   // Store the client address which was used to send the first request.
   IPEndPoint old_address = client_->client()->GetLatestClientAddress();
@@ skipping 659 matching lines @@
       "www.google.com", "/trailer_url", headers, kBody, trailers);
 
   EXPECT_EQ(kBody, client_->SendSynchronousRequest("/trailer_url"));
   EXPECT_EQ(200u, client_->response_headers()->parsed_response_code());
   EXPECT_EQ(trailers, client_->response_trailers());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net