Standardize usage of virtual/override/final in net/

net/quic/quic_data_stream_test.cc

 // Copyright 2013 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 "net/quic/quic_data_stream.h"
 
 #include "net/quic/quic_ack_notifier.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_utils.h"
 #include "net/quic/quic_write_blocked_list.h"
@@ skipping 22 matching lines @@
 const bool kShouldProcessData = true;
 
 class TestStream : public QuicDataStream {
  public:
   TestStream(QuicStreamId id,
              QuicSession* session,
              bool should_process_data)
       : QuicDataStream(id, session),
         should_process_data_(should_process_data) {}
 
-  virtual uint32 ProcessData(const char* data, uint32 data_len) override {
+  uint32 ProcessData(const char* data, uint32 data_len) override {
     EXPECT_NE(0u, data_len);
     DVLOG(1) << "ProcessData data_len: " << data_len;
     data_ += string(data, data_len);
     return should_process_data_ ? data_len : 0;
   }
 
   using ReliableQuicStream::WriteOrBufferData;
   using ReliableQuicStream::CloseReadSide;
   using ReliableQuicStream::CloseWriteSide;
 
@@ skipping 474 matching lines @@
   EXPECT_CALL(*connection_, SendBlocked(kClientDataStreamId1)).Times(0);
   EXPECT_CALL(*session_, WritevData(kClientDataStreamId1, _, _, _, _, _))
       .WillOnce(Return(QuicConsumedData(0, fin)));
 
   stream_->WriteOrBufferData(body, fin, nullptr);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net