Use override instead of virtual..override in ./net/quic/... and

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 <string>
 #include <sys/epoll.h>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 203 matching lines @@
     server_config_.SetInitialSessionFlowControlWindowToSend(
         3 * kInitialSessionFlowControlWindowForTest);
 
     QuicInMemoryCachePeer::ResetForTests();
     AddToCache("GET", "https://www.google.com/foo",
                "HTTP/1.1", "200", "OK", kFooResponseBody);
     AddToCache("GET", "https://www.google.com/bar",
                "HTTP/1.1", "200", "OK", kBarResponseBody);
   }
 
-  virtual ~EndToEndTest() {
+  ~EndToEndTest() override {
     // TODO(rtenneti): port RecycleUnusedPort if needed.
     // RecycleUnusedPort(server_address_.port());
     QuicInMemoryCachePeer::ResetForTests();
   }
 
   QuicTestClient* CreateQuicClient(QuicPacketWriterWrapper* writer) {
     QuicTestClient* client = new QuicTestClient(
         server_address_,
         server_hostname_,
         false,  // not secure
@@ skipping 1111 matching lines @@
   QuicSession* session = dispatcher->session_map().begin()->second;
   EXPECT_EQ(0u, QuicSessionPeer::GetLocallyClosedStreamsHighestOffset(
       session).size());
   server_thread_->Resume();
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace tools
 }  // namespace net