Remove "This file includes unit tests" comments.

webrtc/video/send_statistics_proxy_unittest.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-// This file includes unit tests for SendStatisticsProxy.
 #include "webrtc/video/send_statistics_proxy.h"
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 #include "webrtc/test/histogram.h"
@@ skipping 727 matching lines @@
 
   EXPECT_EQ(1, test::NumHistogramSamples(
                    "WebRTC.Video.Screenshare.FecBitrateSentInKbps"));
   EXPECT_EQ(static_cast<int>((rtx_counters.fec.TotalBytes() * 2 * 8) /
                              metrics::kMinRunTimeInSeconds / 1000),
             test::LastHistogramSample(
                 "WebRTC.Video.Screenshare.FecBitrateSentInKbps"));
 }
 
 }  // namespace webrtc