Revert "Update includes for webrtc/{base => rtc_base} rename (1/3)"

webrtc/modules/audio_processing/utility/block_mean_calculator.cc

 /*
  *  Copyright 2016 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.
  */
 
 #include "webrtc/modules/audio_processing/utility/block_mean_calculator.h"
 
-#include "webrtc/rtc_base/checks.h"
+#include "webrtc/base/checks.h"
 
 namespace webrtc {
 
 BlockMeanCalculator::BlockMeanCalculator(size_t block_length)
     : block_length_(block_length),
       count_(0),
       sum_(0.0),
       mean_(0.0) {
   RTC_DCHECK(block_length_ != 0);
 }
@@ skipping 20 matching lines @@
   return mean_;
 }
 
 // Flush all samples added.
 void BlockMeanCalculator::Clear() {
   count_ = 0;
   sum_ = 0.0;
 }
 
 }  // namespace webrtc