Warn on missing OVERRIDE/virtual everywhere, not just in header files.

net/quic/congestion_control/available_channel_estimator_test.cc

 // Copyright (c) 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 "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/quic/congestion_control/available_channel_estimator.h"
 #include "net/quic/test_tools/mock_clock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 namespace test {
 
 class AvailableChannelEstimatorTest : public ::testing::Test {
  protected:
-  void SetUp() {
+  virtual void SetUp() {
     srand(1234);
     packet_size_ = 1200;
     sequence_number_ = 1;
     QuicTime receive_time = receive_clock_.Now();
     QuicTime sent_time = send_clock_.Now();
     estimator_.reset(new AvailableChannelEstimator(sequence_number_,
                                                    sent_time,
                                                    receive_time));
   }
 
@@ skipping 73 matching lines @@
   }
   QuicBandwidth bandwidth = QuicBandwidth::Zero();
   EXPECT_EQ(kAvailableChannelEstimateGood,
             estimator_->GetAvailableChannelEstimate(&bandwidth));
   EXPECT_EQ(QuicBandwidth::FromBytesAndTimeDelta(packet_size_, received_delta),
             bandwidth);
 }
 
 }  // namespace test
 }  // namespace net